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yan [13]
3 years ago
6

A sample of 31 observations is selected from a normal population. The sample mean is 69, and the population standard deviation i

s 8. Conduct the following test of hypothesis using the 0.01 significance level.
H0: μ = 72
H1: μ ≠ 72
a. Is this a one- or two-tailed test?
b. What is the decision rule?
c. What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)
d. What is your decision regarding H0?
Mathematics
1 answer:
Nookie1986 [14]3 years ago
6 0

Answer:

the answer is 73

Step-by-step explanation:

H0: μ = 72

H1: μ ≠ 72

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