simple random sample of size n=64 is obtained from a population that is skewed right with μ=77 and σ=32. mean = 77 and standard deviation = 2. (b) What is P x>84.6? (c) What is P x≤67.8? (d) What is P 75

simple random sample of size n=64 is obtained from a population that is skewed right with μ=77 and σ=32. mean = 77 and standard deviation = 2. (b) What is P x>84.6? (c) What is P x≤67.8? (d) What is P 75

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

100%

A simple random sample of size n=64 is obtained from a population that is skewed right with μ=77 and σ=32.

mean = 77 and standard deviation = 2.

(b) What is P x>84.6?

(d) What is P 75<x<85.4?

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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