For Exercises 1 and 2, answer the following questions:
1. A sample of with sample mean is drawn from a normal population in which .
8.99.1
(a) 5 (b) (c) . We can estimate the population mean to within 9.8 with 95% confidence.
(d) (90.2, 109.8). We are 95% confident that the population mean lies between 90.2 and 109.8.