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Author Question: Exhibit 9-9The sales of a grocery store had an average of $8,000 per day. The store introduced ... (Read 46 times)

hannahmadyronde

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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


◦

μ< 8000


◦

μ> 8000


◦

μ = 8000


◦

μ > 8250

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by hannahmadyronde on Mar 25, 2023

hariet5

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Reply #1 on: Mar 25, 2023
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hannahmadyronde

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Reply 2 on: Mar 25, 2023
Great answer, keep it coming :)

komodo7

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Reply 3 on: Yesterday
Wow, this really help

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