In a market research survey of 29012901 motorists, 255255 said that they made an obscene gesture in the previous month. complete parts (a) and (b) below.
a. if 1 of the surveyed motorists is randomly selected, what is the probability that this motorist did not make an obscene gesture in the previous month? the probability is . 9121.9121. (round to four decimal places as needed.)
b. if 5050 of the surveyed motorists are randomly selected without replacement, what is the probability that none of them made an obscene gesture in the previous month? should the 5% guideline be applied in this case? select the correct choice below and fill in the answer box within your choice. (round to four decimal places as needed.) g

a. 1-255255/29012901=0.991202017 is the probability of not making an obscene gesture.
b. The probability of none of 5050 making an obscene gesture is (a) raised to the power of 5050: 4.1591E-20 approx. We have not used the 5% rule in this binomial distribution.

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