Question

1.23)

A population distribution of scores has a mean = 50 and a standard deviation of 4. Researchers plan to take a sample size of N = 64. Based on the central limit theorem, 68.26% of all possible sample means are between the sample means of ______.

	a.	46 and 54
	b.	42 and 58
	c.	49.5 and 50.5
	d.	47 and 53

1.32)

With a p value of .10 and an α of .05, should you reject or fail to reject the null hypothesis?

	a.	reject
	b.	fail to reject

1.33)

With an obtained z score 1.78, an α of .05, and a critical value of 1.65 should you reject or fail to reject the null hypothesis?

	a.	reject
	b.	fail to reject

Answer 1