A simple random sample of size n is drawn from a population that is normally distributed. The sample mean,x is found to be 110, and the sample standard deviation, s, is found to be 12. A.) Construct a 98% confidence interval about y if the sample size, n, is 21. B.) Construct a 98% confidence interval about y if the sample size, n, is 14. C.) Construct a 95% confidence interval about y if the sample size, n, is 21. D.) Should the confidence intervals in parts (a)-(c) have been computed if the population had not been normally distributed? (a) Construct a 98% confidence interval about y if the sample size, n, is 21. Lower bound:____; Upper bound____ (Round to one decimal place as needed.)
A simple random sample of size n is drawn from a population that is
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