Attached below is the Z table required for this question.
A study measured the amount of consultation time physicians took with patients. From the study, it was determined that the consultation time was normally distributed with a mean of 15 minutes and a standard deviation of 2 minutes. Twenty percent of the patients require more than how many minutes? Select from the answers below.
The general manager of a logistic consulting group believes that 28% of the firm’s orders come from new customers. A simple random sample of 120 orders was selected. Using the manager’s belief, determine: