we are interested in estimating the average number of full- and parttime nurses employed in the area hospitals.
Ex 8) A population consists of the following five values: 1,1,6,7,9. a. List all samples of size 3, and compute the mean of each sample
b. Compute the mean of the distribution of sample means and the population mean.
Ex 12) scrapper Elevator Company has 20 sales representatives who sell its product throughout the United States and Canada. The number of units sold last month by each representative is listed below. Assume these sales figures to the population values
a.
Compute mean and population
Ex 16) A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40.
a. Less than 74 b. Between 74 and 76 c. Between 76 and 77 d. Greater than 77
Chapter 9:
Ex 4) Suppose you know σ and you want an 85 % confidence level. What value would you use as z in formula of confidence interval for a population mean?