Answered: 1) The heights of a group of adults is…

1) The heights of a group of adults is nearly normal, z scores for Ben and Billy's heights are computed and are 1.3 and -1.5 respectively, whose height is further from the main explain how you know.

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter13: Probability And Calculus

Section13.2: Expected Value And Variance Of Continuous Random Variables

Problem 10E

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Question

1) The heights of a group of adults is nearly normal, z scores for Ben and Billy's heights are computed and are 1.3 and -1.5 respectively, whose height is further from the main explain how you know.

2) a binominal distribution has probability of success p=0.8, is a sample size 40 sufficient to ensure that the distribution is approximately normal? if so explain why, if not what sample size would be sufficient?

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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