(Solved): Among 44- to 49-year-olds, 33% say they have written an editorial letter while under the influence o ...
Among 44- to 49-year-olds,
33%say they have written an editorial letter while under the influence of alcohol. Suppose four 44- to 49-year-olds are selected at random. Complete parts (a) through (d) below. (a) What is the probability that all four have written an editorial letter while under the influence of alcohol? (Round to four decimal places as needed.) (b) What is the probability that at least one has not written an editorial letter while under the influence of alcohol? (Round to four decimal places as needed.) (c) What is the probability that none of the four have written an editorial letter while under the influence of alcohol? (Round to four decimal places as needed.) (d) What is the probability that at least one has written an editorial letter while under the influence of alcohol? (Round to four decimal places as needed.)
