a)What is the probability that the marketing representative must select 4 people before he finds one who attended the last home football game? b) What is the probability that the marketing representative must select more than 4 people before he finds one who attended the last homeo Football game?

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Q: Assume that when adults with smartphones are randomly​ selected, 55​% use them in meetings or…

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A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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Q: find the probability that exactly 22 of them use their smartphones in meetings or classes.

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Q: Assume that when adults with smartphones are randomly​ selected, 43​% use them in meetings or…

A: Solution: Let X be the random variable that  adults uses smartphones in meetings or classes. The…

Q: Assume that when adults with smartphones are randomly​ selected, 39​% use them in meetings or…

A: Define the random variable x as the number of adults using smartphones in meetings or classes. Here,…