SOLUTION: A political strategist claims that 56% of voters in Madison County support his candidate. In a poll of 100 randomly selected voters, 50 of them support the strategist's candidate.

Question 1116068: A political strategist claims that 56% of voters in Madison County support his candidate. In a poll of 100 randomly selected voters, 50 of them support the strategist's candidate. At = .05, is the political strategist's claim warranted?
a. No, because the test value -0.71 is in the noncritical region.
b. No, because the test value -1.57 is in the critical region.
c. Yes, because the test value -1.57 is in the noncritical region.
d. Yes, because the test value -1.21 is in the noncritical region.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Assuming the assumptions etc. are all valid, the actual calculation has a z=-0.06/sqrt((0.56*0.44/100)); sqrt term = 0.0496
z=-1.21, and the rejection or noncritical region is |z|>1.96
Claim is possible or can use word warranted.
D.

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