Kevin Philips is a manager at Nascent Technologies, a software development company. He leads a team of seven programmers and he himself reports to his immediate boss as well as the head of the R&D division and one marketing manager. Which of the following figures depicts Kevin’s span of control?

A. Two
B. Three
C. Seven
D. Five
E. Ten

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis.b)reject the null hypothesis and conclude the mean is higher than $6,000 per day.c)reject the null hypothesis and conclude the mean is lower than $6,000 per day.d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day.expert answer