Introduction to Business Statistics
7th Edition
ISBN: 9781111792374
Author: WEIERS
Publisher: Cengage Learning
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Textbook Question
Chapter 11.5, Problem 11.49E
The students in an aerobics class have been weighed both before and after the 5-week class, with the following results:
Using the 0.05 level of significance, evaluate the effectiveness of the program. Using the appropriate statistical table, what is the most accurate statement we can make about the p-value for this test?
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Students have asked these similar questions
Below indicate whether the appropriate test would be an independent t-test, dependent t-test, One-way ANOVA, or z-test.
A researcher wants to know if people find baby animals cuter than adult animals. All of the participants in a study are shown 10 pictures of baby animals and 10 pictures of adult animals. They are asked to rate (on a 1 to 10 scale) how cute they think each animal is.
What is the computed value of the appropriate test statistic?
A. -2.536
B. -5.014
C. -4.000
D. -2.000
The HR Manager wanted to investigate whether female employees are more likely or less likely to be promoted compared to male employees at the XYZ Company. What statistical test should he use to analyze the data?
a. Independent Samples t-test
b. Chi Square Test of Independence
c. One Way ANOVA
d. Paired t-test
e. Repeated Measures ANOVA
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Introduction to Business Statistics
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- What is meant by the sample space of an experiment?arrow_forwardSuppose you computed r=-0.524 with 20 data points. Is r significant? Explain. 0.05 significance level. Your Answer:arrow_forwardSamples of body temperatures were taken from both men and women. The information from the samples is summarized below. Use a 0.05 significance level to to test the claim that men and women have different mean body temperatures. Men: n₁ = 15; 1 = 98.38° F; s₁ = 0.45°F Women: n2=91; 2 = 98.17°F; $2 = 0.65° F a. On your Work Upload or Calculations page, write down your hypotheses. Label which hypothesis is the claim. b. The test statistic is c. The critical value is . (Round to 3 decimal places.) (Round to 3 decimal places.) d. The p-value is (Round to 3 decimal places.) e. On your Work Upload or Calculations page, show how you made your decision using either the traditional or p-value method. The correct decision is to 1: Reject the null hypothesis, or 2: Fail to reject the null hypothesis. box.) (Type 1 or 2 in the f. On your Work Upload or Calculations page, write your conclusion/results summary. (Use the standard language about evidence and support of claims.)arrow_forward
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