According to a Gallup Poll, the probablity that a Republican approves of the death penalty is 69%. Answer the following a round each answer to three decimal places. a. If 9 republicans are selected, find the probability that exactly 7 approve of the death penalty. b. If 9 republicans are selected, find the probability that at least 5 approve of the death penalty.
According to a Gallup Poll, the probablity that a Republican approves of the death penalty is 69%. Answer the following a round each answer to three decimal places. a. If 9 republicans are selected, find the probability that exactly 7 approve of the death penalty. b. If 9 republicans are selected, find the probability that at least 5 approve of the death penalty.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:According to a Gallup Poll, the probablity that a Republican approves of the death penalty is 69%.
Answer the following a round each answer to three decimal places.
a. If 9 republicans are selected, find the probability that exactly 7 approve of the death penalty.
b. If 9 republicans are selected, find the probability that at least 5 approve of the death penalty.
c. If 390 Republicans are randomly selected, find the mean number that approve of the death penalty
d. Find the standard deviation of the binomial distribution created in part C.
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