A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample (in years). Assume that the data come from a distribution that is Normally distributed. Complete parts a through c below. A. Find a 95% confidence interval for the mean difference, mu1 - mu2, in ages of houses in the two neighborhoods. B. Is 0 within the confidence interval? C. What does the confidence interval suggest about the null hypothesis that the mean difference is 0?
A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample (in years). Assume that the data come from a distribution that is Normally distributed. Complete parts a through c below. A. Find a 95% confidence interval for the mean difference, mu1 - mu2, in ages of houses in the two neighborhoods. B. Is 0 within the confidence interval? C. What does the confidence interval suggest about the null hypothesis that the mean difference is 0?
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 7E
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A developer wants to know if the houses in two different neighborhoods were built at roughly the same time. She takes a random sample of six houses from each neighborhood and finds their ages from local records. The accompanying table shows the data for each sample (in years). Assume that the data come from a distribution that is
A. Find a 95% confidence interval for the
B. Is 0 within the confidence interval?
C. What does the confidence interval suggest about the null hypothesis that the mean difference is 0?
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