Question 445850: 1.Karen wants to perform a test of hypothesis using α = 0.05 to test H0: μ = 73 and Ha: μ ≠ 73. What value of z should she use to form the rejection region(s)?
A z < -1.28
B z > 1.28
C z < -1.645
D z > 1.645
E z < -2.33
F z > 2.33
G z < -1.645 or z > 1.645
H z < -1.96 or z > 1.96
I z < -2.575 or z > 2.575
J none of the above
2Harry wants to perform a test of hypothesis using α = 0.1 to test H0: μ ≤ 73. What value of z should he use to form
the rejection region(s)?
A z < -1.28
B z > 1.28
C z < -1.645
D z > 1.645
E z < -2.33
F z > 2.33
G z < -1.645 or z > 1.645
H z < -1.96 or z > 1.96
I z < -2.575 or z > 2.575
J none of the above
3.Adam has performed a hypothesis test and concluded that his p-value is .0175. Assume α = .01. Should he
reject his null hypothesis?
A reject
B do not reject
4. Shirley has performed a hypothesis test and concluded that her p-value is .0175. Assume α = .05. Should she
reject her null hypothesis?
A reject
B do not reject
5.In general, what is the value of having a p-value?
A it lets the user decide what alpha to use, and then decide whether to reject (or not reject) the null hypothesis
B it forces the user to use a given alpha when deciding whether to reject (or not reject) the null hypothesis
C it has no particular value; it is just a confusion factor
D it lets the user decide what alpha to use, and then choose a confidence level
E none of the above
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1.Karen wants to perform a test of hypothesis using α = 0.05 to test H0: μ = 73 and Ha: μ ≠ 73. What value of z should she use to form the rejection region(s)?
A z < -1.28
B z > 1.28
C z < -1.645
D z > 1.645
E z < -2.33
F z > 2.33
G z < -1.645 or z > 1.645
H z < -1.96 or z > 1.96
I z < -2.575 or z > 2.575
J none of the above
----
Ans: H
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2Harry wants to perform a test of hypothesis using α = 0.1 to test H0: μ ≤ 73. What value of z should he use to form
the rejection region(s)?
A z < -1.28
B z > 1.28
C z < -1.645
D z > 1.645
E z < -2.33
F z > 2.33
G z < -1.645 or z > 1.645
H z < -1.96 or z > 1.96
I z < -2.575 or z > 2.575
J none of the above
----
True answer: z < -2.576
Your Answer: J
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3.Adam has performed a hypothesis test and concluded that his p-value is .0175. Assume α = .01. Should he
reject his null hypothesis?
A reject
B do not reject
----
The p-value is greater that alpha
Do not reject Ho.
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4. Shirley has performed a hypothesis test and concluded that her p-value is .0175. Assume α = .05. Should she
reject her null hypothesis?
A reject
B do not reject
---
Ans: Reject Ho
==========================
5.In general, what is the value of having a p-value?
A it lets the user decide what alpha to use, and then decide whether to reject (or not reject) the null hypothesis
B it forces the user to use a given alpha when deciding whether to reject (or not reject) the null hypothesis
C it has no particular value; it is just a confusion factor
D it lets the user decide what alpha to use, and then choose a confidence level
E none of the above
---
B is the best answer; not perfect, but the best.
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Cheers,
Stan H.
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