To determine whether or not the advertising campaigns have

Reference no: EM13620817

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 $8,250 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:

The p-value is, (round to 4 decimal places):

Reference no: EM13620817

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