I am all around stuck at figuring out this question. Before endorsing a candidat
ID: 2959821 • Letter: I
Question
I am all around stuck at figuring out this question.Before endorsing a candidate for political office, a newspaper editor surveys 200 randomly selected readers and finds that 140 favor the candidate in question. At the 0.05 level of significance, test the editor's claim that the candidate is favored by more than two-thirds of the readers.The correct statement for the claim in this test is:
this involves mew
6.
The critical value(s) for this test is/are:
A) 1.96
B) -1.645
C) -1.96
D) 1.645
7.
The test statistic value for this test is:
A) 1.00
B) -5.42
C) 5.42
D) -1.00
8.
The correct conclusion for this test is:
A) Fail to reject Ho which says there is insufficient evidence to warrant support of the claim that two-thirds of the readers favor the candidate.
B) Fail to reject Ho which says there is insufficient evidence to warrant rejection of the claim that two-thirds of the reders favor the candidate.
C) Reject Ho which says there is sufficient evidence to warrant rejection of the claim that two-thirds of the readers favor the candidate.
D) Reject Ho which says there is sufficient evidence to warrant support of the claim that two-thirds of the readers favor the candidate.
Explanation / Answer
Given n=200, phat =140/200 =0.7
6.
The critical value(s) for this test is/are:
Z(0.05)=1.645 (check standard normal table)
A) 1.96
B) -1.645
C) -1.96
D) 1.645
7.
The test statistic value for this test is:
Z=(phat-p)/[p*(1-p)/n]
=(0.7-2/3)/sqrt((2/3)*(1/3)/200)
=1
A) 1.00
B) -5.42
C) 5.42
D) -1.00
8.
The correct conclusion for this test is:
A) Fail to reject Ho which says there is insufficient evidence to warrant support of the claim that two-thirds of the readers favor the candidate.
B) Fail to reject Ho which says there is insufficient evidence to warrant rejection of the claim that two-thirds of the reders favor the candidate.
C) Reject Ho which says there is sufficient evidence to warrant rejection of the claim that two-thirds of the readers favor the candidate.
D) Reject Ho which says there is sufficient evidence to warrant support of the claim that two-thirds of the readers favor the candidate.
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