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 
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