Consider the following data: x 1 = 25.7 x 2 = 30.6 2 1 = 98.2

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Consider the following data:

x̅₁ = 25.7 x̅₂ = 30.6

σ²₁ = 98.2 σ²₂ = 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

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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: x 1 = 25.7 x 2 = 30.6 2 1 = 98.2

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a At 005z 2 z 0025 196 With 95 confidence the difference between the population me...View the full answer

Essentials Of Business Statistics Communicating With Numbers

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