9.77, 9.79, and 9.80 For these questions, the data set is given at this text's website. Assume that the data sets are from random samples and the distributions are Normal. a. Find a 95 % confidence interval for the difference between means , state whether it captures 0, and explain what that shows about the means. b. Perform a hypothesis test to see whether the means are significantly different using a significance level of 0.05. Explain your conclusion clearly. Shoes Compare the number pair of shoes for men and women.
9.77, 9.79, and 9.80 For these questions, the data set is given at this text's website. Assume that the data sets are from random samples and the distributions are Normal. a. Find a 95 % confidence interval for the difference between means , state whether it captures 0, and explain what that shows about the means. b. Perform a hypothesis test to see whether the means are significantly different using a significance level of 0.05. Explain your conclusion clearly. Shoes Compare the number pair of shoes for men and women.
Solution Summary: The author explains how to calculate the 95% confidence interval using Minitab.
9.77, 9.79, and 9.80 For these questions, the data set is given at this text's website. Assume that the data sets are from random samples and the distributions are Normal.
a. Find a
95
%
confidence interval for the difference between means, state whether it captures 0, and explain what that shows about the means.
b. Perform a hypothesis test to see whether the means are significantly different using a significance level of 0.05. Explain your conclusion clearly.
Shoes Compare the number pair of shoes for men and women.
Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.
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Hypothesis Testing using Confidence Interval Approach; Author: BUM2413 Applied Statistics UMP;https://www.youtube.com/watch?v=Hq1l3e9pLyY;License: Standard YouTube License, CC-BY
Hypothesis Testing - Difference of Two Means - Student's -Distribution & Normal Distribution; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=UcZwyzwWU7o;License: Standard Youtube License