A sample of 50 items is selected to determine whether or not to accept the hypothesis that a population means differs from a value of 20. The sample mean and standard deviation are 18 and 7, respectively. The null hypothesis is not rejected, which of the following is a possible value for the level of significance associated with this test?

Question

A sample of 50 items is selected to determine whether or not to accept the hypothesis that a population means differs from a value of 20.  The sample mean and standard deviation are 18 and 7, respectively.  The null hypothesis is not rejected, which of the following is a possible value for the level of significance associated with this test?

Question 4 options:
	
8%

10%

1%

5%

PsyDAG · Answer

Z = (score-mean)/SEm SEm = SD/√n Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.