Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 12.1, Problem 54E
The Nipah Virus. During one year, Malaysia was the site of an encephalitis outbreak caused by the Nipah virus, a paramyxovirus that appears to spread from pigs to workers on pig farms. As reported by K. Gob et al. in the paper “Clinical Features of Nipah Virus Encephalitis among Pig Farmers in Malaysia” (New England Journal of Medicine, Vol. 342, No. 17, pp. 1229–1235), neurologists from the University of Malaysia found that, among 94 patients infected with the Nipah virus, 30 died from encephalitis. Find and interpret a 90% confidence interval for the percentage of Malaysians infected with the Nipah virus who would die from encephalitis.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A paper published in the Journal of Dermatology and Venereology reported that
nickel allergy more likely to occur in women who report cosmetic dermatitis from
using eye shadow. The researcher has taken two samples in their study from a
similar population. In the first sample of 131 women with cosmetic dermatitis from
using eye shadow, 12 were diagnosed with a nickel allergy. While in the second
sample of 250 women with cosmetic dermatitis from using eye shadow, 25 were
diagnosed with a nickel allergy.
Compute a 95% confidence interval that is a closely related but
simpler alternative to Wilson's Method for the first and the second
samples for the proportion of women with cosmetic dermatitis from
using eye shadow who have a nickel allergy.
(i)
(ii)
Compare the two confidence intervals you compute in (i).
(i)
Suppose you are informed that the true proportion of women
diagnosed with a nickel allergy is 0.12. Explain it refers to which group.
2. Does the herb Echinacea help the common cold? A study investigated the impact of
echinacea vs. a standard cold medication on cold symptoms. Each subject in the study
chose to take either the echinacea or a standard cold medication in capsule fom After
taking the capsule for one week, the subjects then reported to the researchers the status of
their cold symptoms. The researchers subsequently reported that there was no
statistically significant difference in the duration of the cold between these groups.
Identify the type of study.
a) Cluster sample
b) Social acceptability bias
c) Experiment
d) Observational study
Fish of Lake Laengelmaevesi. An article by J. Puranen of the Department of Statistics, University of Helsinki, discussed a classic study on several variables of seven different species of fish caught in Lake Laengelmaevesi, Finland. On theWeissStats site, we present the data on weight (in grams) and length (in centimeters) from the nose to the beginning of the tail for four of the seven species. Perform the required parts for both the weight and length data.
a. Obtain individual normal probability plots and the standard deviations of the samples.
b. Perform a residual analysis.
c. Use your results from parts (a) and (b) to decide whether conducting a one-way ANOVA test on the data is reasonable. If so, also do parts (d) and (e).
d. Use a one-way ANOVA test to decide, at the 5% significance level, whether the data provide sufficient evidence to conclude that a difference exists among the means of the populations from which the samples were taken.
e. Interpret your results from part (d)
Chapter 12 Solutions
Introductory Statistics (10th Edition)
Ch. 12.1 - Why is statistical inference generally used to...Ch. 12.1 - Prob. 3ECh. 12.1 - Prob. 4ECh. 12.1 - Regarding a sample proportion: a. What is it? b....Ch. 12.1 - Regarding the phrase number of successes: a. For...Ch. 12.1 - For what is the phrase number of failures an...Ch. 12.1 - Explain the relationships among the sample...Ch. 12.1 - Prob. 9ECh. 12.1 - Repeat parts (b)(e) of Exercise 12.9 for samples...Ch. 12.1 - Prob. 11E
Ch. 12.1 - Prob. 12ECh. 12.1 - Prob. 13ECh. 12.1 - Prob. 14ECh. 12.1 - Prob. 15ECh. 12.1 - Prob. 16ECh. 12.1 - Random Drug Testing. A Harris Poll asked Americans...Ch. 12.1 - Genetic Binge Eating. According to an article in...Ch. 12.1 - In each of Exercises 12.251230, we have given the...Ch. 12.1 - In each of Exercises 12.251230, we have given the...Ch. 12.1 - In each of Exercises 12.251230, we have given the...Ch. 12.1 - In each of Exercises 12.2512.30, we have given the...Ch. 12.1 - In each of Exercises 12.2512.30, we have given the...Ch. 12.1 - Prob. 30ECh. 12.1 - Prob. 31ECh. 12.1 - Prob. 32ECh. 12.1 - In each of Exercises 12.3112.36, we have specified...Ch. 12.1 - Prob. 34ECh. 12.1 - Prob. 35ECh. 12.1 - Prob. 36ECh. 12.1 - Prob. 37ECh. 12.1 - In Exercises 12.3712.42, we have specified the...Ch. 12.1 - Prob. 39ECh. 12.1 - Prob. 40ECh. 12.1 - Prob. 41ECh. 12.1 - Prob. 42ECh. 12.1 - Prob. 43ECh. 12.1 - In each of Exercises 12.4312.48, we have specified...Ch. 12.1 - Prob. 45ECh. 12.1 - In each of Exercises 12.4312.48, we have specified...Ch. 12.1 - In each of Exercises 12.4312.48, we have specified...Ch. 12.1 - In each of Exercises 12.4312.48, we have specified...Ch. 12.1 - In Exercises 12.4912.54, use Procedure 12.1 on...Ch. 12.1 - In Exercises 12.4912.54, use Procedure 12.1 on...Ch. 12.1 - In Exercises 12.4912.54, use Procedure 12.1 on...Ch. 12.1 - In Exercises 12.4912.54, use Procedure 12.1 on...Ch. 12.1 - Prob. 53ECh. 12.1 - The Nipah Virus. During one year, Malaysia was the...Ch. 12.1 - Literate Adults. Suppose that you have been hired...Ch. 12.1 - IMR in Singapore. The infant mortality rate (IMR)...Ch. 12.1 - Prob. 57ECh. 12.1 - Prob. 58ECh. 12.1 - Asthmatics and Sulfites. Refer to Exercise 12.51. ...Ch. 12.1 - Drinking Habits. Refer to Exercise 12.52. a. Find...Ch. 12.1 - Factory Far mini; Funk. Refer to Exercise 12.53. ...Ch. 12.1 - The Nipah Virus. Refer to Exercise 12.54. a. Find...Ch. 12.1 - Product Response Rate. A company manufactures...Ch. 12.1 - Prob. 64ECh. 12.1 - President's Job Rating. A poll conducted by Gallup...Ch. 12.1 - Prob. 66ECh. 12.1 - In discussing the sample size required for...Ch. 12.1 - Prob. 68ECh. 12.1 - Prob. 69ECh. 12.1 - Prob. 70ECh. 12.1 - Prob. 71ECh. 12.1 - Prob. 72ECh. 12.1 - Prob. 73ECh. 12.1 - Prob. 74ECh. 12.1 - Prob. 75ECh. 12.1 - In each of Exercises 12.7512.78, use the...Ch. 12.1 - In each of Exercises 12.7512.78, use the...Ch. 12.1 - In each of Exercises 12.7512.78, use the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In each of Exercises 12.7912.84, we have given the...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.852.94, use Procedure 12.2 on page...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - In Exercises 12.8512.94, use Procedure 12.2 on...Ch. 12.2 - Prob. 94ECh. 12.3 - Explain the basic idea for performing a hypothesis...Ch. 12.3 - Prob. 96ECh. 12.3 - Sunscreen Use. Industry Research polled teenagers...Ch. 12.3 - Consider a hypothesis test for two population...Ch. 12.3 - Prob. 99ECh. 12.3 - In each of Exercises 12.10012.105, we have...Ch. 12.3 - Prob. 101ECh. 12.3 - Prob. 102ECh. 12.3 - In each of Exercises 12.10012.105, we have...Ch. 12.3 - In each of Exercises 12.10012.105, we have...Ch. 12.3 - In each of Exercises 12.10012.105, we have...Ch. 12.3 - In Exercises 12.10612.111, use either the...Ch. 12.3 - Prob. 107ECh. 12.3 - In Exercises 12.10612.111, use either the...Ch. 12.3 - In Exercises 12.10612.111, use either the...Ch. 12.3 - In Exercises 12.10612.111, use either the...Ch. 12.3 - Prob. 111ECh. 12.3 - Prob. 112ECh. 12.3 - Prob. 113ECh. 12.3 - Prob. 114ECh. 12.3 - Prob. 115ECh. 12.3 - Prob. 116ECh. 12.3 - Prob. 117ECh. 12.3 - Hormone Therapy and Dementia. An issue of Science...Ch. 12.3 - Women in the Labor Force. The Organization for...Ch. 12.3 - Neutropenia. Neutropenia is an abnormally low...Ch. 12.3 - Prob. 121ECh. 12.3 - Prob. 122ECh. 12.3 - Prob. 123ECh. 12.3 - Prob. 124ECh. 12.3 - In each of Exercises 12.12212.127, we have given...Ch. 12.3 - Prob. 126ECh. 12.3 - Prob. 127ECh. 12.3 - In each of Exercises 12.12812.131, use the...Ch. 12.3 - Prob. 129ECh. 12.3 - Federal Gas Tax. The Quinnipiac University Poll...Ch. 12.3 - Blockers and Cancer. A Wall Street Journal...Ch. 12.3 - Prob. 132ECh. 12.3 - Prob. 133ECh. 12.3 - Prob. 134ECh. 12.3 - Prob. 135ECh. 12.3 - Eating Out Vegetarian. Refer to the study on...Ch. 12.3 - Eating Out Vegetarian. Repeal Exercise 12.136 by...Ch. 12 - Medical Marijuana? An international poll of...Ch. 12 - Prob. 2RPCh. 12 - Prob. 3RPCh. 12 - Fill in the blanks. a. The mean of all possible...Ch. 12 - Prob. 5RPCh. 12 - Prob. 6RPCh. 12 - Suppose that you are using independent samples to...Ch. 12 - Prob. 8RPCh. 12 - Prob. 9RPCh. 12 - Getting a Job. Refer to Problem 9. a. Determine a...Ch. 12 - Justice in the Courts? In an issue of Parade...Ch. 12 - Prob. 12RPCh. 12 - Small phone Ownership. The Pew Internet American...Ch. 12 - Smartphone Ownership. Refer to Problem 13. a. Find...Ch. 12 - Bulletproof Vests. In the New York Times article A...Ch. 12 - Recall from Chapter 1 (see page 34) that the Focus...Ch. 12 - As you learned on page 544, recent research by R....
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Similar questions
- A mutation in Gene A is thought to be associated with a disease. The mutation in Gene A is found in 5% of the population. 2% of the whole population is diagnosed with disease B at some point in their life time. 1% of the population both has the mutation and also gets diagnosed with the disease in their life time. Is the provided data adequate to test the independency of mutation in Gene A and occurrence of Disease B? If it is not, what other information or data is needed to test the independency? What is the probability of Disease B, among the individuals with the mutation in Gene A? What is the probability of having the mutation in Gene A among the individuals with Disease B? If an individual has the mutated Gene A, what is their Relative Risk of developing the disease?arrow_forwardIn a study conducted by the U.S. Department of Health and Human Services, a sample of 546 boys aged 6–11 was weighed, and it was determined that 87 of them were overweight. A sample of 508 girls aged 6–11 was also weighed, and 74 of them were overweight. Can you conclude that the proportion of boys who are overweight differs from the proportion of girls who are overweight? Please show calcularrow_forwardMammography and clinical breast examination are the two major techniques used to screen for breast cancer. However, as true for any screening test, they are not completely accurate. If it is determined, based on mammographic findings, that there is a possibility of breast cancer, this is usually confirmed or disconfirmed by a subsequent biopsy. A false positive test is a mammogram positive test that is disconfirmed by biopsy. The data in Table 1 were reported in a paper concerning breast cancer screening (Elmore, et al, New England Journal of Medicine 1998; 338(16): 1089-1096). Table 1 False positive breast cancer screening tests over a 10-year period # Screening tests # False positive tests 9762 631 1. Suppose that 5% of all mammograms are obtained from women who truly have breast cancer. What is the proportion of mammograms that will yield test positive results? Hint: Subdivide the probability of a test positive mammogram into two mutually exclusive components of {test positive…arrow_forward
- Sleep apnea is a disorder characterized by pauses in breathing during sleep. Children who suffer from untreated sleep apnea often have behavior problems, including hyperactivity, inattention, and aggression. A common treatment for pediatric sleep apnea is the surgical removal of enlarged tonsils and adenoids that are obstructing the airways. Suppose researchers at a sleep clinic are interested in the effect of surgical treatment for pediatric sleep apnea on aggressive behavior. They study 11 children without sleep apnea, 11 children with untreated sleep apnea, and 11 children who have been surgically treated for sleep apnea. Aggression is measured using the Conners Rating Scales. The sample means and sums of squares of the scores for each of the three groups are presented in the following table. Group Sample Mean Sum of Squares No Sleep Apnea 0.59 0.3240 Untreated Sleep Apnea 0.45 0.4410 Treated Sleep Apnea 0.31 0.2250 The researchers perform an analysis of…arrow_forwardMammography and clinical breast examination are the two major techniques used to screen for breast cancer. However, as true for any screening test, they are not completely accurate. If it is determined, based on mammographic findings, that there is a possibility of breast cancer, this is usually confirmed or disconfirmed by a subsequent biopsy. A false positive test is a mammogram positive test that is disconfirmed by biopsy. The data in Table 1 were reported in a paper concerning breast cancer screening (Elmore, et al, New England Journal of Medicine 1998; 338(16): 1089-1096). Table 1 False positive breast cancer screening tests over a 10-year period # Screening tests # False positive tests 9762 631 1. Another aspect of mammographic screening is the presence of false negatives. A false negative is a screen negative woman who has breast cancer. False negatives usually occur because the tumors are small and hard to detect. It is estimated that among women with breast cancer, 2% of all…arrow_forwardMammography and clinical breast examination are the two major techniques used to screen for breast cancer. However, as true for any screening test, they are not completely accurate. If it is determined, based on mammographic findings, that there is a possibility of breast cancer, this is usually confirmed or disconfirmed by a subsequent biopsy. A false positive test is a mammogram positive test that is disconfirmed by biopsy. The data in Table 1 were reported in a paper concerning breast cancer screening (Elmore, et al, New England Journal of Medicine 1998; 338(16): 1089-1096). Table 1 False positive breast cancer screening tests over a 10-year period # Screening tests # False positive tests 9762 631 1. Suppose 10 women are given mammograms. What is the probability that at least 1 woman will have a false positive test?arrow_forward
- 1. Does the herb Echinacea help the common cold? A study investigated the impact of echinacea vs. a standard cold medication on cold symptoms. Each subject in the study chose to take either the echinacea or a standard cold medication in capsule form After taking the capsule for one week, the subjects then reported to the researchers the status of their cold symptoms. The researchers subsequently reported that there was no statistically significant difference in the duration of the cold between these groups. The variable duration of cold in this study would be the a) Explanatory variable b) Response variable c) Population d) Statisticarrow_forwardTrue or false: a) When a process is in a state of statistical control, then most of the output will meet specifications. b) When a process is out of control, an unacceptably large proportion of the output will not meet specifications. c) When a process is in a state of statistical control, all the variation in the process is due to causes that are inherent in the process itself. d) When a process is out of control, some of the variation in the process is due to causes that are outside of the process.arrow_forwardNCI Cancer Bulletin, December 2, 2008 Volume 5 / Number 24 Title of the article: After Menopause, Weight Affects Breast Cancer Rates More than Mammography Use Women who are overweight or obese after menopause face an increased risk of breast cancer, but a large prospective cohort study indicates that the frequency of mammography use and screening accuracy are not the primary explanations for higher rates of breast cancer in these women. The same is true of large, invasive breast cancer tumors and advanced stage disease; risk increases with weight, but higher rates are not explained by the frequency or accuracy of screening mammography before breast cancer was diagnosed. The study appears in the December 3 Journal of the National Cancer Institute. Dr. Karla Kerlikowske of the San Francisco Veterans Affairs Medical Center and colleagues gathered data on 287,115 postmenopausal women who were registered in the Breast Cancer Surveillance Consortium database. Reflecting a trend in the…arrow_forward
- NCI Cancer Bulletin, December 2, 2008 Volume 5 / Number 24 Title of the article: After Menopause, Weight Affects Breast Cancer Rates More than Mammography Use Women who are overweight or obese after menopause face an increased risk of breast cancer, but a large prospective cohort study indicates that the frequency of mammography use and screening accuracy are not the primary explanations for higher rates of breast cancer in these women. The same is true of large, invasive breast cancer tumors and advanced stage disease; risk increases with weight, but higher rates are not explained by the frequency or accuracy of screening mammography before breast cancer was diagnosed. The study appears in the December 3 Journal of the National Cancer Institute. Dr. Karla Kerlikowske of the San Francisco Veterans Affairs Medical Center and colleagues gathered data on 287,115 postmenopausal women who were registered in the Breast Cancer Surveillance Consortium database. Reflecting a trend in the…arrow_forwardNCI Cancer Bulletin, December 2, 2008 Volume 5 / Number 24 Title of the article: After Menopause, Weight Affects Breast Cancer Rates More than Mammography Use Women who are overweight or obese after menopause face an increased risk of breast cancer, but a large prospective cohort study indicates that the frequency of mammography use and screening accuracy are not the primary explanations for higher rates of breast cancer in these women. The same is true of large, invasive breast cancer tumors and advanced stage disease; risk increases with weight, but higher rates are not explained by the frequency or accuracy of screening mammography before breast cancer was diagnosed. The study appears in the December 3 Journal of the National Cancer Institute. Dr. Karla Kerlikowske of the San Francisco Veterans Affairs Medical Center and colleagues gathered data on 287,115 postmenopausal women who were registered in the Breast Cancer Surveillance Consortium database. Reflecting a trend in the…arrow_forwardNCI Cancer Bulletin, December 2, 2008 Volume 5 / Number 24 Title of the article: After Menopause, Weight Affects Breast Cancer Rates More than Mammography Use Women who are overweight or obese after menopause face an increased risk of breast cancer, but a large prospective cohort study indicates that the frequency of mammography use and screening accuracy are not the primary explanations for higher rates of breast cancer in these women. The same is true of large, invasive breast cancer tumors and advanced stage disease; risk increases with weight, but higher rates are not explained by the frequency or accuracy of screening mammography before breast cancer was diagnosed. The study appears in the December 3 Journal of the National Cancer Institute. Dr. Karla Kerlikowske of the San Francisco Veterans Affairs Medical Center and colleagues gathered data on 287,115 postmenopausal women who were registered in the Breast Cancer Surveillance Consortium database. Reflecting a trend in the…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,
Calculus For The Life Sciences
Calculus
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:Pearson Addison Wesley,
Hypothesis Testing - Solving Problems With Proportions; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=76VruarGn2Q;License: Standard YouTube License, CC-BY
Hypothesis Testing and Confidence Intervals (FRM Part 1 – Book 2 – Chapter 5); Author: Analystprep;https://www.youtube.com/watch?v=vth3yZIUlGQ;License: Standard YouTube License, CC-BY