Question: a simple random sample size n is drawn from A population that is normally distributed. The sample mean, X, is found to be 115, and

a simple random sample size n is drawn from A population that is normally distributed. The sample mean, X, is found to be 115, and the sample standard deviation, S, is found to be 10.

a) construct a 96% confidence interval about u if the sample size, n, is 18

b) construct a 96% confidence interval about u if the sample size, n, is 26

c) construct a 98% confidence interval about u if the sample size, n, is 18

d) can we have completed the confidence intervals in parts a through C if the population had not been normally distributed?

a simple random sample size n is drawn from A population that

A simple random sample of scenis drawn from a population that is normally distributed the sample mean, I found to be 115, and the sample standard deviation is found to be 10 (a) Construct a 90% confidence interval about it the sample size, n, is 18 (b) Construct a confidence interval about if the sample sun, is 20 (c) Construct a 98% confidence interval about it the sample size, n, is 18 (d) Could we have computed the confidence intervals in parts (ac) if the population had not been normally distributed? Cack the icon to view the table of areas under the distribution

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