Consider the following data: a. Construct a 95% confidence interval for the difference between the population means.

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Consider the following data:

X1 = -10.5 X2 = -16.8 s21 = 7.9 s22 = 9.3 ni = 15n2 = 20

a. Construct a 95% confidence interval for the difference between the population means. Assume the population variances are unknown but equal.

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

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Authors: Sanjiv Jaggia, Alison Kelly

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Question Posted: Jan 28, 2015 08:58 AM

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Consider the following data: a. Construct a 95% confidence interval for the difference between the population means.

Question:

X1 = -10.5 X2 = -16.8 s21 = 7.9 s22 = 9.3 ni = 15n2 = 20

Step by Step Answer:

a For 005 and df n 1 n 2 2 15 20 2 33 t 2df t 00253...View the full answer

Essentials Of Business Statistics Communicating With Numbers

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