Consider the following data: x 1 = 25.7 x 2 = 30.6 2 1 = 98.2
Question:
Consider the following data:
x̅1 = 25.7 x̅2 = 30.6
σ21 = 98.2 σ 22 = 87.4
n1 = 20 n2 = 25
a. Construct a 95% confidence interval for the difference between the population means.
b. Specify the competing hypotheses in order to determine whether or not the population means differ.
c. Using the confidence interval from part a, can you reject the null hypothesis? Explain.
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Essentials Of Business Statistics Communicating With Numbers
ISBN: 9780078020544
1st Edition
Authors: Sanjiv Jaggia, Alison Kelly
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