Question 264492: Recall that in the 2000 election, 48.4% of votes were cast for Al Gore. If we take a random sample of 50 voters from that election, and we want to compute the probability that more than 52% of them voted for Gore, i.e., P(p hat>0.52), which of the following standard normal probabilities equals this probability?
A)P(Z > 0.51)
B)P(Z > 0.036)
C)P(Z > 0.01)
D)P(Z > 0.52)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Recall that in the 2000 election, 48.4% of votes were cast for Al Gore. If we take a random sample of 50 voters from that election, and we want to compute the probability that more than 52% of them voted for Gore, i.e., P(p hat>0.52), which of the following standard normal probabilities equals this probability?
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p = 0.0484
std = sqrt(0.484*0.9516/50) = 0.0707
z(0.52) = (0.52-0.484)/0.0707 = 0.51
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Ans: A
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Cheers,
Stan H.
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A)P(Z > 0.51)
B)P(Z > 0.036)
C)P(Z > 0.01)
D)P(Z > 0.52)
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