Author Question: Exhibit 9-9The sales of a grocery store had an average of $8,000 per day. The store introduced ... (Read 52 times)

hannahmadyronde · **on:** Mar 25, 2023

Exhibit 9-9
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.

Refer to Exhibit 9-9. The correct null hypothesis for this problem is

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μ< 8000

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μ> 8000

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μ = 8000

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μ > 8250

hariet5 · **Reply #1 on:** Mar 25, 2023

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