5. A sample of size n = 16 is collected. The sample mean is û = 12 and the sample variance is ô² = 1. Find a 95% confidence interval for the true mean u. Does this sample provide grounds to reject a null hypothesis that u = 11 at the 5% significance level?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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5. A sample of size n = 16 is collected. The sample mean is û = 12 and the
sample variance is ô² = 1. Find a 95% confidence interval for the true mean
μ. Does this sample provide grounds to reject a null hypothesis that μ = 11
at the 5% significance level?
Transcribed Image Text:5. A sample of size n = 16 is collected. The sample mean is û = 12 and the sample variance is ô² = 1. Find a 95% confidence interval for the true mean μ. Does this sample provide grounds to reject a null hypothesis that μ = 11 at the 5% significance level?
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