A specific study found that the average number of doctor visits per…

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Question Answered step-by-step A specific study found that the average number of doctor visits per… A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2.  Assume that the variable is normally distributed. 3.  Suppose a random sample of 15 people over 55 is selected.  What is the probability that the sample mean is above 9?4.  Suppose a random sample of 10 people over 55 is selected.  What is the probability that the sample mean will be below 7? 7.  Find the probability that a sample of 20 citizens will have a mean less than $1800.8.  Find the probability that a sample of 50 citizens will have a mean less than $2000. Math Statistics and Probability STATISTICS 123 Share QuestionEmailCopy link Comments (0)

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