1. Based on the information given in the table below, determine the a) cutoff z-score(s) using the z-score table, b) the obtained z-score for the sample score c) decide whether to accept or reject the null hypothesis.

You need to use the z-score formulas.

Study	Pop. Mean	Pop. St. Dev.	Sample score (X)	Cutoff p-value	# of Tails
A	70	4	74	.05	1 (high predicted)
B	70	1	74	.01	2 tailed
C	72	2	77	.05	2 tailed
D	72	2	68	.05	1 (low predicted)

Study A Study B

a. _______________ a. __________________

b. _______________ b. __________________

c. _______________ c. __________________

Study C Study D

a. _______________ a. __________________

b. _______________ b. __________________

c. _______________ c. ___________________

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