A sample of 33 observations is selected from a normal population. The sample mean is 53, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.05 significance level. He: H = 57 H: u # 57 a. Is this a one- or two-tailed test? O One-tailed test O Two-tailed test b. What is the decision rule? Reject Hg if -1.960 1.960

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A sample of 33 observations is selected from a normal population. The sample mean is 53, and the population standard deviation is 6.
Conduct the following test of hypothesis using the 0.05 significance level.
Hei H = 57
Hi:H # 57
a. Is this a one- or two-tailed test?
O One-tailed test
O Two-tailed test
es
b. What is the decision rule?
Reject Hg if -1.960 < z< 1.960
Reject Hg if z<-1.960 or z> 1.960
Transcribed Image Text:A sample of 33 observations is selected from a normal population. The sample mean is 53, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.05 significance level. Hei H = 57 Hi:H # 57 a. Is this a one- or two-tailed test? O One-tailed test O Two-tailed test es b. What is the decision rule? Reject Hg if -1.960 < z< 1.960 Reject Hg if z<-1.960 or z> 1.960
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