Of 300 female registered voters surveyed, 120 indicated they were planning to vo
ID: 3125484 • Letter: O
Question
Of 300 female registered voters surveyed, 120 indicated they were planning to vote for the incumbent president; while of 400 male registered voters, 180 indicated they were planning to vote for the incumbent president. At alpha = .05, test to see if there is a significant difference between the proportions of females and males who plan to vote for the incumbent president. What is(are) the critical value(s) of the test statistic?
Select one:
A. 1.96
B. 1.645
C. 2.33
D. 1.645
Select one:
A. 1.96
B. -2.33
C. 2.33
D. -1.64 and 1.64
Explanation / Answer
1.
As we are concerned if there is a "significant difference", then this is a two tailed test.
For a 0.05 level two tailed test, the critical values are, using table/technology
OPTION A: +/- 1.96 [ANSWER]
**************************
2.
As this is a right tailed test (We want to prove that p <= 0.20 is wrong), and it is at 0.01 level, then by table/technology,
OPTION C: 2.33 [ANSWER]
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.