A square node indicates a condition, and a circle indicates an action

Effective sales management begins with:

a. determining sales goals. b. determining the most efficient structure for the sales force. c. specifying the sales force size. d. designing a compensation plan.

Delivery time by courier services is important to stock brokers. One such firm wishes to estimate the average time taken by couriers delivering negotiable securities in New York City. Specifically, the firm randomly samples 36 courier pickup and delivery times. The collected data, in minutes, represent the time between pickup and delivery. Suppose the population standard deviation is 0.3 minutes

and the sample mean is 9.975 . Find the sample mean and compute. A 90-percent confidence interval for the true mean delivery time, ? is: a. 9.852 to 10.05. b. 119.60 to 119.80. c. 119.62 to 119.78. d. 119.26 to 119.87. e. 9.893 to 10.057.