The sales manager of a food company wants to determine if the weekly sales of 16

Question

The sales manager of a food company wants to determine if the weekly sales of 16 ounce packages of frozen broccoli has increased since last year. The mean weekly number of sales per store was 2,400 packages last year. The sales manager set the following hypotheses to test Ho: = 2400 H1: > 2400 Available sales data are from 400 stores. Assume that this data set is a random sample. The sample mean is 2,450 and the sample standard deviation is 800. For the significance level of 5%, find the critical value. a. 2450 b.2478.4 c.2465.6 d. 2334.4 e, 2321.6

Explanation / Answer

This is right tailed test and we will use T distribution

Degree of freedom = 400-1 = 39

For Critical , either use the t table or the Excel function

T.INV(0.95,399)

= 1.6487 ( rounded to four decimal places)

Options are not there and I think these are wrong options, critical values can never be so large.

Answer is 1.6487

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