Homework Answers
H0: Null hypothesis:
500
HA:Alternative hypothesis: 
500
SE = 
/
= 100/
= 4
Test statistic is:
Z = (536 - 500)/4 = 9
Take 
=0.05
One Tail - Right Side Test
From Table, critical value of Z = 1.645
Since the calculated value of Z = 9 is greater than critical value of Z = 1.645,the difference is significant. Reject null hypothesis.
Conclusion:
The data support the claim that SAT prep program will increase SAT
score.
Add Answer to:
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