Answered: A simple random sample of size n=64 is…

A simple random sample of size n=64 is obtained from a population with μ=80 and σ=24. Describe the sampling distribution of x. (a) What is P x>86? (b) What is P x≤73.1?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A simple random sample of size

n=64

is obtained from a population with

μ=80

and

σ=24.

Describe the sampling distribution of

(a) What is

P x>86?

(b) What is

P x≤73.1?

P 76.85<x<87.05?

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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