[5 5 10] A sample of size n is drawn from a normal
Chapter 0, Problem SE6.5(choose chapter or problem)
[5 5 10] A sample of size n is drawn from a normal population with unknown mean and known variance 2 6.1. a. Compute a 95% confidence interval (CI) for when n 15 and the sample mean x 56.8. b. Compute a 95% CI for when n 30 and x is the same as in (a). Explain the difference between the CIs in (a) and (b). c. How large must n be if the length of the 95% CI is to be 0.75? 2. [
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