Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
3rd Edition
ISBN: 9781259969454
Author: William Navidi Prof.; Barry Monk Professor
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 14.1, Problem 20E
Life-saving drug: Using the data in Exercise 18, perform the Tukey—Kramer test to determine which pairs of
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t test for Independent Means Professor Smith hypothesizes that type of TV show impacts people’s mood. To study this, she uses two groups: the experimental group who watches reality TV shows for three hours, while the control group watches the news for three hours. Each of the groups then completes an assessment of mood. In all, 32 people participate: 17 watch reality TV shows and 15 watch the news. The Mean, Sample Size, and SS for each group are below. Using these data, conduct a t test (p<.05) to determine if TV show type had an impact on an individual’s mood.
Reality TV Shows: News:
N = 17 N = 15
M = 34 M = 24
SS = 340 SS = 251
Step 1) Create a research hypothesis and a null hypothesis about the populations.
Null hypothesis (H0):
Research hypothesis (HA):
Step 2) Determine the characteristics of the comparison distribution.
Degrees of freedom for experimental group and control group = df1 =…
t test for Independent Means. Professor Wolinsky hypothesizes that type of TV show impacts people’s mood. To study this, she uses two groups: the experimental group who watches reality TV shows for three hours, while the control group watches the news for three hours. Each of the groups then completes an assessment of mood. In all, 32 people participate: 17 watch reality TV shows and 15 watch the news. The Mean, Sample Size, and SS for each group are below. Using these data, conduct a t test (p<.05) to determine if TV show type had an impact on an individual’s mood.
Reality TV Shows: News:
N = 17 N = 15
M = 34 M = 24
SS = 340 SS = 251
Step 1) Create a research hypothesis and a null hypothesis about the populations.
Null hypothesis (H0):
Research hypothesis (HA):
Step 2) Determine the characteristics of the comparison distribution.
Degrees of freedom for experimental group and control group =…
Application Exercise:
Dr. Mussey used a measure to classify children as showing some form of learning disorder. She also examined
school records and noted which were enrolled in a remedial Math. Below is the contingency table of the data.
What can be concluded with an a of 0.01?
Remedial
Disorder
yes
no
none
23
78
dyslexia
25
75
ADHD
20
20
T) What is the appropriate test statistic?
--Select-
Compute the statistic selected in a):
U Obtain/compute the appropriate values to make a decision about Ho.
Critical Value =
; Test Statistic =
Decision: ---Select-
v Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
Effect Size =
; Magnitude: --Select--
wMake an interpretation based on the results.
O There is a significant relationship between learning disorder and the school.
O There is a significant learning disorder difference in remedial Math.
O There is no relationship between learning disorder and remedial Math.
Chapter 14 Solutions
Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561
Ch. 14.1 - In Exercises 7 and 8, fill in each blank with the...Ch. 14.1 - Prob. 8ECh. 14.1 - Prob. 9ECh. 14.1 - Prob. 10ECh. 14.1 - Prob. 11ECh. 14.1 - Prob. 12ECh. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - In a one-way ANOVA, the following data were...Ch. 14.1 - Samples were drawn from three populations. The...Ch. 14.1 - Samples were drawn from three populations. The...
Ch. 14.1 - Pesticide danger: One of the factors that...Ch. 14.1 - Life-saving drug: Penicillin is produced by the...Ch. 14.1 - Pesticide danger: Using the data in Exercise 17,...Ch. 14.1 - Life-saving drug: Using the data in Exercise 18,...Ch. 14.1 - Artificial hips: Artificial hip joints consist of...Ch. 14.1 - Floods: Rapid drainage of floodwater is crucial to...Ch. 14.1 - Artificial hips: Using the data in Exercise 21,...Ch. 14.1 - Floods: Using the data in Exercise 22, perform the...Ch. 14.1 - Polluting power plants: Power plants can emit...Ch. 14.1 - Prob. 26ECh. 14.1 - Prob. 27ECh. 14.1 - Prob. 28ECh. 14.1 - Prob. 29ECh. 14.1 - Prob. 30ECh. 14.1 - Prob. 31ECh. 14.2 - Prob. 5ECh. 14.2 - Prob. 6ECh. 14.2 - Prob. 7ECh. 14.2 - Prob. 8ECh. 14.2 - In a two-way ANOVA, the P-value for interactions...Ch. 14.2 - Prob. 10ECh. 14.2 - Prob. 11ECh. 14.2 - Prob. 12ECh. 14.2 - Prob. 13ECh. 14.2 - Prob. 14ECh. 14.2 - Prob. 15ECh. 14.2 - Prob. 16ECh. 14.2 - Prob. 17ECh. 14.2 - Prob. 18ECh. 14.2 - Prob. 19ECh. 14.2 - Prob. 20ECh. 14.2 - Prob. 21ECh. 14.2 - Prob. 22ECh. 14.2 - Prob. 23ECh. 14.2 - Strong beams: The following table presents...Ch. 14.2 - Prob. 25ECh. 14.2 - Prob. 26ECh. 14.2 - Fruit yields: An agricultural scientist performed...Ch. 14.2 - Prob. 28ECh. 14.2 - Prob. 29ECh. 14 - Exercises 1-4 refer to the following data: At a...Ch. 14 - Prob. 2CQCh. 14 - Prob. 3CQCh. 14 - Prob. 4CQCh. 14 - Prob. 5CQCh. 14 - Prob. 6CQCh. 14 - Prob. 7CQCh. 14 - Prob. 8CQCh. 14 - Prob. 9CQCh. 14 - Prob. 10CQCh. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Prob. 4RECh. 14 - Prob. 5RECh. 14 - Prob. 6RECh. 14 - Prob. 7RECh. 14 - Prob. 8RECh. 14 - Prob. 9RECh. 14 - Prob. 10RECh. 14 - Prob. 11RECh. 14 - Prob. 12RECh. 14 - Prob. 13RECh. 14 - Prob. 14RECh. 14 - Prob. 15RECh. 14 - Prob. 1WAICh. 14 - Prob. 2WAICh. 14 - Prob. 3WAICh. 14 - Prob. 4WAICh. 14 - Prob. 5WAICh. 14 - Prob. 1CSCh. 14 - Prob. 2CSCh. 14 - Prob. 3CSCh. 14 - Prob. 4CS
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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 biopsychologist studies the role of the brain chemical serotonin in aggression. One sample of rats serves as a control group and receives a placebo. A second sample of rats receives a drug that lowers brain levels of serotonin. Then the researcher tests the animals by recording the number of aggressive responses each of the rats display. (Hint: Be sure to use the correct test statistic). Low Serotonin Control n = 4 n = 8 M = 22 M = 14 SS = 76 SS = 164 Does the drug have a significant effect on aggression? Use an alpha level of .05, two tails. Be sure to state your conclusion. Use Cohen’s d to measure the effect size. What is the size of effect?arrow_forwardHand Computation: A researcher wants to determine if work arrangement has an effect on the level of parenting stress of fathers. The work arrangement has 3 conditions: (1) no work, (2) work on-site, or (3) work from home. The researcher distributed a questionnaire that measures the level of parenting stress. He had27 participants for this research assigned 9 to each of the three conditions, respectively 6. What is the p value? (use Jamovi or MS Excel results) 7. What is your decision? (reject Ho or retain Ho) 8. What is your conclusion? 9. What is the effect size? Show the value and explain if it is small, moderate or large. 10. Show hand computation solution and Jamovi output or MS EXCELarrow_forwardPatient/T Patient/N Total Healthy/T Healthy/N Total 26 15 41 7 37 33 52 Test at a = 5%, 85arrow_forward
- Statistics students in Oxnard College sampled 11 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below:arrow_forwardCheck whether Weight and the number of hours of sports per week are monotonically related random variables in the population.I am sending a screenshot with only one PART of the data in the attachment. α = 0.05. Write that solution in R commander (code)arrow_forwardZ- test A local news claims that 40% of vehicles on the freeways are vans or SUV's. I go to a nearby freeway overpass count 60 vehciles of which 19 are vans or SUV's. Can I say , using (alpha =.05) that the actual percentage is LOWER than the news report?arrow_forward
- Regan is interested in comparing the outdoor activity of people from different parts of the country. He collects data from people from the East Coast, Midwest, and West Coast and assesses how many minutes per day they spend exercising. What test. should i use? ANOVA Paired samples t test Independent samples t test Correlationarrow_forwardThe first test a doctor would order to determine whether a person is infected with HIV (the virus that causes AIDS) is the ELISA test. It detects antibodies and antigens for HIV. A study in Statistical Science by J. Gastwirth estimated that, if the person is actually infected with HIV, this test produces a positive result 97.7% of the time. If a person is not infected with HIV, the test result is negative 92.6% of the time. According the the US Centers for Disease Control (CDC), an estimated 1.1 million Americans out of a population of 321 million were infected with HIV in 2015. Using the information above, determine the probability that a randomly selected person whose ELISA test is positive actually is infected with HIV? a. What is the probability that a randomly selected American is infected with HIV? b. Using the answer to part (a) and the conditional probabilities of positive and negative ELISA test results, fill out the contingency table below: ELISA Test Result…arrow_forwardIn the Glucose Group ONLY: Was there a statistical difference between blood glucose values at baseline compared to 30 minutes? (Compete t- test using only data from the glucose group between baseline and 30 minutes – this is a paired test; interpret results to answer question)arrow_forward
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