Mathematics, 20.04.2020 22:17, Hockeypro1127

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 value of the test statistic is:

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The sales of a grocery store had an average of $8,000 per day. The store introduced several advertis...