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Find the required probability for binomial distribution.

Survey: Cellular Phones According to an article appearing in The Wall Street Journal, about 35% of all U.S. households have a cellular phone. Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:

a) Fewer than 5 do not have a cellular phone?

b) More than 7 do not have a cellular phone?

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