5. The reported average cost per workbook at a large college is $27.50. A professor claims that the actual average cost per workbook is higher than $27.50. A sample of 39 different workbooks has an average cost of $29.85. The population standard deviation is known to be $5.75. Can the null hypothesis be rejected at alpha = 0.01? For question #5, tell whether this a right, left, or two- tailed test. For question #6, identify the null hypothesis For question #7, give just your calculated z- value. For question #8, convert your answer from #7 into a P-value, and place this value in the blank space provided. For question #9, answer the true/false question about the rejection of the null hypothesis.
5. The reported average cost per workbook at a large college is $27.50. A professor claims that the actual average cost per workbook is higher than $27.50. A sample of 39 different workbooks has an average cost of $29.85. The population standard deviation is known to be $5.75. Can the null hypothesis be rejected at alpha = 0.01?
For question #5, tell whether this a right, left, or two- tailed test.
For question #6, identify the null hypothesis
For question #7, give just your calculated z- value.
For question #8, convert your answer from #7 into a P-value, and place this value in the blank space provided.
For question #9, answer the true/false question about the rejection of the null hypothesis.
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