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Computing confidence interval about the population mean

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Reference no: EM132422268

Problem: A simple random sample of size n is drawn from a population whose population standard deviation is 6.4 The sample mean is 46.8

Required:

Question 1: Compute the 90% confidence interval about the population mean if the sample size n, is 30 (use ascending order)

Question 2: Compute the 90% confidence interval about the population mean if the sample size n, is 50 (use ascending order)

Question 3: How does increasing the sample size affect the margin of error, E?

Question 4: Compute the 99% confidence interval about the population mean if the sample size n, is 30 (use ascending order)

Question 5: Compare the 99% Interval to the 90% interval

Question 6: How does increasing the confidence affect the size of the margin of error, E?

Question 7: Can we compute a confidence interval about the population mean based on the information given if the sample size is n = 15? Yes or No? Why?

Reference no: EM132422268

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