Question
A survey of nonprofit organizations showed that online fundraising increased in the past year. Based on a random sample of 52 nonprofit organizations, the mean
A survey of nonprofit organizations showed that online fundraising increased in the past year. Based on a random sample of
52 nonprofit organizations, the mean one-time gift donation in the past year was $
75, with a standard deviation of $
18.
a.
If you test the null hypothesis at the
0.10 level of significance, is there evidence that the mean one-time gift donation is greater than $
70?
b.
Interpret the meaning of the p-value in this problem.
a. State the null and alternative hypotheses. Choose the correct answer below.
A.
H0:
70
H1:
=75
B.
H0:
=75
H1:
>75
C.
H0:
70
H1:
70
D.
H0:
=75
H1:
75
E.
H0:
70
H1:
70
F.
H0:
70
H1:
>70
Find the test statistic.
tSTAT
=
nothing
(Round to two decimal places as needed.)
Find the p-value for this hypothesis test.
p-value
=
nothing
(Round to three decimal places as needed.)
What is the conclusion for this test?
A.
Do not reject the null hypothesis. There
is sufficient evidence that the mean one-time gift donation is greater than $
70.
B.
Reject the null hypothesis. There
is insufficient evidence that the mean one-time gift donation is greater than $
70.
C.
Reject the null hypothesis. There
is sufficient evidence that the mean one-time gift donation is greater than $
70.
D.
Do not reject the null hypothesis. There
is insufficient evidence that the mean one-time gift donation is greater than $
70.
b. Interpret the meaning of the p-value in this problem. Choose the correct answer below.
A.
The p-value is the probability that the population mean one-time gift donation is $
70 given that the sample mean one-time gift donation is $
75.
B.
The p-value is the probability of getting a sample mean one-time gift donation of $
75 or more, given that the population mean one-time gift donation is $
70.
C.
The p-value is the probability that the population mean one-time gift donation is $
75 or more.
D.
The p-value is the probability that the population mean one-time gift donation is more than $
70.
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