A manager of a call center is in charge of creating a staffing plan. The number of calls received per day is normally distributed. Which two statistics would be needed in order to estimate the number of calls that would be received 95% of the time. a. median b. interquartile range c. standard deviation d. mean
A manager uses a linear regression to examine how the store's retail sales are predicted by advertising expenditures. What will retail sales represent in this regression? a. the control variable b. the independent variable c. the predictor variable d. the dependent variable