SOLUTION: Hello I;m really confused on this problem...I just dont understand what to do. Im taking statistics online and emailed my teacher 3 days ago on help with question but havent gotten

Question 494762: Hello I;m really confused on this problem...I just dont understand what to do. Im taking statistics online and emailed my teacher 3 days ago on help with question but havent gotten a respond...Help would be grealy appreciated...thanks a lot
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
A)Ho:u< line underneath 83 and Ha:u>83 a=0.01
B)Ho:u> line underneath 92 and Ha:u<92 a=0.05
C)Ho:u=53 and Ha:u # 53 a=0.10

Answer by stanbon(57984) (Show Source):
You can put this solution on YOUR website!
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
A)Ho:u< line underneath 83 and Ha:u>83 a=0.01
Right-tail tes with z = z = 2.3263
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B)Ho:u> line underneath 92 and Ha:u<92 a=0.05
Left-tail test with z = -1.645
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C)Ho:u=53 and Ha:u # 53 a=0.10
2-tail test with z = +/-1.645
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Cheers,
Stan H.
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