statistics 490

Question 1: The distribution of cholesterol levels in teenage boys is approximately normal mean of 170 and standard deviation 25. Find the mean of the sample means using random samples of size 16.

Answer:

Question 2: The amount of time employees of telecommunications company have worked for the company are normally distributed with a mean of 5.1 years and standard deviation of 2.0 years. Random samples of size 18 are drawn from the population and the mean of each sample is determined. What is the mean of sample means in this situation?

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