30 Jul 10.11. A. A Random Sample Of 25 Was Drawn From A Normal Distribution Whose Standard Deviation Is 5 …
Problem 2
Chapter 10 (Introduction to Estimation): Exercises 10.11
10.11. a. A random sample of 25 was drawn from a normal distribution whose standard deviation is 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.
b. Repeat Part a with a sample size of 100.
c. Repeat Part a with a sample size of 400.
d. Describe what happens to the confidence interval estimate when the sample size increases.
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