Complete solution. About 90% of American adults had chickenpox before adulthood. We now consider a random sample of 130 American adults.(a) How many people in this sample would you expect to have had chickenpox in their childhood? (Enter your answer as awhole number.)117peopleAnd with what standard deviation? (Round your answer to two decimal places.)3.45people(b) Would you be surprised if there were 114 people who have had chickenpox in their childhood? (Round your answer to twdecimal places.)Since z = [0.08✓ surprising for there to be 114 people who have had chickenpox in childhood.X, which is less than ✔ two standard deviations away from the mean, it would not be(c) What is the probability that 114 or fewer people in this sample have had chickenpox in their childhood? (Round your ansto four decimal places.)0.3180 XHow does this probability relate to your answer to part (b)?This probability coincides with the result of part (b).This probability does not coincide with the result of part (b).

Given that sample size n = 130, expected people with chickenpox, mu=117 and SD s = 3.45.

(b) Would you be surprised if there were 114 people who have had chickenpox in their childhood? (Round your answer to tw decimal places.) Since z = [0.08 X, which is less than ✓ surprising for there to be 114 people who have had chickenpox in childhood. two standard deviations away from the mean, it would not be (c) What is the probability that 114 or fewer people in this sample have had chickenpox in their childhood? (Round your anst to four decimal places.) 0.3180 x How does this probability relate to your answer to part (h)?

(b) Would you be surprised if there were 114 people who have had chickenpox in their childhood? (Round your answer to tw decimal places.) Since z = [0.08 X, which is less than ✓ surprising for there to be 114 people who have had chickenpox in childhood. two standard deviations away from the mean, it would not be (c) What is the probability that 114 or fewer people in this sample have had chickenpox in their childhood? (Round your anst to four decimal places.) 0.3180 x How does this probability relate to your answer to part (h)?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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