1. Suppose the following data are selected randomly from a population of normally distributed values.

45	51	43	48	43	57	54
39	42	48	45	39	44

Construct a 95% confidence interval to estimate the population mean.

(Round the intermediate values to 2 decimal places. Round your answers to 2 decimal places.)

2.A random sample of size40is taken from a population of200members. The sample mean is64and the population standard deviation is9. Construct a 96% confidence interval to estimate the population mean. What is the point estimate of the population mean? (Round your answers to 2 decimal places.) The point estimate of the population mean is