Friends. How many close friends do you have? Suppose that the number of closefriends
Chapter 0, Problem 10.53(choose chapter or problem)
Friends. How many close friends do you have? Suppose that the number of closefriends adults claim to have varies from person to person with mean = 9 andstandard deviation = 2.5. An opinion poll asks this question of an SRS of 1100adults. We will see later that in this situation the sample mean response x hasapproximately the Normal distribution with mean 9 and standard deviation0.075. What is P(8.9 x 9.1), the probability that the sample result xestimates the population truth = 9 to within 0.1?
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