Given a sample mean of 2.1 and a population standard deviation of 0.7 from a sample of 10 data points, a 90% confidence interval will have a width of 2.36

Approximately 28 percent of all practitioners work in:

A. Government D. Health care and hospitals B. Corporations E. Educational institutions C. Public relations firms

A measure of systematic risk is

A) standard deviation. B) correlation coefficient. C) beta. D) variance.