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Question

# Construct a hypothesis testing rejection area ( at the significance level of 1% ) for the null-hypothesis That the

mean is less than 81, and the alternative hypothesis that the mean is higher than 81.

Assume that the standard deviation of the population is 15 and the sample is 25

B) you have received a sample mean of 87. Should you reject the null hypothesis

hypothesis testing rejection area ( at the significance level of 1% ) for the null-hypothesis reject the... View the full answer

Level of signe ficances o-ol
Ho: UC 81
HI : M &gt; 81
0= 15
n = 25
Test statistics
2 = x - M
A
critical region ( rejection aree)
&gt; 20:01
7 2. 326
too
2:32 6
1 = 87
87- 81
6
16
15/
IS/S
W

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