AT&T LTE 2:14 PM kennesaw..view.usg.edu Question 2 (1 point) You are asked to te

Question

AT&T LTE 2:14 PM kennesaw..view.usg.edu Question 2 (1 point) You are asked to test whether the following sample could have been drawn from a population with the mean of 86 OR LOWER The sample average is 84 The sample standard deviation is The sample size is 30 observations Alpha is set to 5% Please state the conclusion of the test The test fails to reject the null a) hypothesis that the population mean is 86 or lower The test rejects the null hypothesis that c) not enough information is provided d) none of the above Save Question 3 (1 point) You are asked to test whether the following sample could have been drawn from a population with the mean of 86 OR GREATER The sample average is 84 The sample standard deviation is 5 The sample size is 30 observations Alpha is set to 1% Please state the conclusion of the test The test rejects the null hypothesis that the population mean is 86 or higher The test fails to reject the null b) hypothesis that the population mean is 86 or higher c) not enough information is provided d) none of the above

Explanation / Answer

2. The correct answer is: a)

Reason: the value of test statistic is:

z = (84-84)/(5/30) = 0

Since, z < 2.36 ( z value at 5%), we fail to reject the null hypothesis.

3. The correct answer is: b)

Reason: Again, z < 2.36, we fail to reject the null hypothesis.

Thanks!

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