Question
A simple random sample of size n is drawn from a population that is normally distributed. The samplemean, x, is found to be 105, and
A simple random sample of size n is drawn from a population that is normally distributed. The samplemean, x, is found to be 105, and the sample standarddeviation, s, is found to be 10.
(a) Construct a 95% confidence interval about if the samplesize, n, is 16. lower bound and upper bound
(b) Construct a 95% confidence interval about if the samplesize, n, is 29.
(c) Construct a 99% confidence interval about if the samplesize, n, is 16.
(d) Could we have computed the confidence intervals in parts(a)-(c) if the population had not been normallydistributed?
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Essentials of Business Analytics
Authors: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
2nd edition
1305627733, 978-1305861817, 1305861817, 978-0357688960, 978-1305627734
