The sales of a grocery store had an average of $8,000 per day. The store introdu
ID: 3434305 • Letter: T
Question
The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected. It was found that the average was $8,300 per day. From past information, it is known that the standard deviation of the population is $1,200.
The correct alternative hypothesis for this problem is
m = 8000
m > 8250
m < 8000
m > 8000
m = 8000
m > 8250
m < 8000
m > 8000
Explanation / Answer
H1 : m > 8000
Because alternative hypothesis is the information we are testing. In this case it is, if sales are more than 8000 or not.