1. A hospital keeps a record of the number of males and females in different age groups who contract a particular disease. The data are summarized as follows: Age Groups 10-25 26-40 41-55 56 + Male Female 23 20 34 64 31 55 29 44 a) Are gender and age of contracting the disease independent of one another (a ≤.05)? b) A researcher believes that people in the 41-55 age group are three times as likely to develop the disease as are those in each of the two younger age groups, while those in the 56 + age group are only twice as likely (relative to those in the two youngest groups). The two youngest age groups are not expected to differ from each data support these beliefs (a < .01)? Do th c) It is also believed that, relative to males, the proportion of females in the 56+ age group that develops the disease is significantly different from the proportion of females in the 10-25 age group that develops the disease. Test this belief with a ≤ .05.

1. A hospital keeps a record of the number of males and females in different age groups who contract a particular disease. The data are summarized as follows: Age Groups 10-25 26-40 41-55 56 + Male Female 23 20 34 64 31 55 29 44 a) Are gender and age of contracting the disease independent of one another (a ≤.05)? b) A researcher believes that people in the 41-55 age group are three times as likely to develop the disease as are those in each of the two younger age groups, while those in the 56 + age group are only twice as likely (relative to those in the two youngest groups). The two youngest age groups are not expected to differ from each data support these beliefs (a < .01)? Do th c) It is also believed that, relative to males, the proportion of females in the 56+ age group that develops the disease is significantly different from the proportion of females in the 10-25 age group that develops the disease. Test this belief with a ≤ .05.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Please answer parts (d) and (e) using a two independent samples hypothesis t test (Q4). You are a crime scene investigator trying to match the lead content of bullet fragments found at a crime scene to the lead content of a box of bullets found with a suspect. To simplify this question, assume that the instrument you use gives you one measurement per fragment in grams/cm3. Assume that you have 5 measurements from fragments found at the crime scene and 7 measurements from bullets found with the suspect. (a) What type of hypothesis test will you use? (b) What are H0 and Ha? Write them both mathematically and in words. (c) You run the analysis and the p-value is 0.0001 and α = 0.001, and β = 0.9. If you reject H0, what is the probability that you made the wrong decision in this case? (d) You run the analysis and the p-value is 0.9, α = 0.001 and β = 0.01. If you fail to reject H0, What is the probability that you made the wrong decision in this case? (e) Under what conditions could an…
You may need to use the appropriate appendix table or technology to answer this question. An agency reports that 11.2% of workers in a particular country belonged to unions. Suppose a sample of 400 workers is collected to determine whether union efforts to organize have increased union membership. (a) Formulate the hypotheses that can be used to determine whether union membership has increased. O Ho: P 0.112 H:pS 0.112 o Ho: P = 0.112 H:p+0.112 Ho:ps 0.112 Hp> 0.112 (b) If the sample results show that 52 of the workers belonged to unions, what is the p-value for your hypothesis test? Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value - (c) At a = 0.05, what is your conclusion? O Do not reject Ho. There is sufficient evidence to conclude that there has been an Increase in union membership. O Do not reject Ho. There is insufficient evidence to conclude that there has been an increase in…
The General Social Survey (GSS) asked this question: “Have you attended religious services in the last week?” Here are the responses for those whose highest degree was high school or above Carry out the chi-square test for the hypothesis of no relationship between the highest degree attained and attendance at religious services in the last week. What do you conclude? Make a table by omitting the column corresponding to those whose highest degree was high school. A) Carry out the chi-square test for the hypothesis of no relationship between the type of advanced degree attained and attendance at religious services in the last week. What do you conclude? B)Make a 2×3 table by omitting the column corresponding to those whose highest degree was high school. Carry out the chi-square test for the hypothesis of no relationship between the type of advanced degree attained and attendance at religious services in the last week. What do you conclude? C) Make a 2×2 table by combining the counts…
Based on information from a large insurance company, 66% of all damage liability claims are made by single people under the age of 25. A random sample of 54 claims showed that 41 were made by single people under the age of 25. Does this indicate that the insurance claims of single people under the age of 25 is higher than the national percent reported by the large insurance company? State the null and alternate hypothesis. a) Ho: p = .66, Ha: p ≠ .66 b) Ho: p = .66, Ha: p > .66 c) Ho: p = .76, Ha: p < .76 d) Ho: p = .76, Ha: p > .76 e) Ho: p = .66, Ha: p < .66
What is H0? And why do we evaluate it instead of the scientific hypothesis?
QUESTION 5 What is iny 0.8944)? (Use the normal tables and report to two digits.) QUESTION 6 What is 0inyl 0.9878)? (Use the normal tables and report to two digits.)
In a study designed to test the "truth" to the theory that, on average, U.S. adults gain weight between Thanksgiving and January a research team looked at responses from 8 randomly selected U.S. adults. The subjects were weighed (lb) on the day before Thanksgiving and again on January 3rd The raw data are found in Table 1. Let ? = 0.025 Table 1: Weights (lb) before Thanksgiving and on Jan. 3rd for 8 U.S. adults Pre-Thanksgiving 168.2 173.5 164.3 166.4 167.6 164.9 172.1 169.8 Jan. 3rd 173.3 159.9 175.4 172.1 174.8 169.7 177.3 164.5 Diff 5.1 -13.6 11.1 5.7 7.2 4.8 5.2 -5.3
Please help it’s not graded
Please send me answer within 10 min!! I will rate you good for sure!! Please solve all the parts with explaination!! 1. A hospital introduces a new order-entry system and wishes to study the impact of this intervention on the number of medication-related adverse events before and after the intervention. Write a non-directional alternative hypothesis for this study. a. Dependent variable: b. Independent variable: c. Hypothesis:
#11). Both pictures are the same question. Need help with it.
Different chemicals are tested to check their effects on different cloth materials. The chemicals will be used in one of the finishing processes. Five cloth materials are selected for testing and four chemicals will be used on each cloth material sample. a) Are there significant differences between four different chemicals? ( = .05) b) Considering your answers in part a., perform the appropriate tests to determine which chemicals differ significantly.
Only do D.