Calculate the smallest sample size required to estimate the population mean under the specifications shown below. a. confidence level 90%, σ=19, and e=6 b. confidence level 95%, σ=23, and e=0.7 c. confidence level 98%, σ=0.5, and e=1

Calculate the smallest sample size required to estimate the population mean under the specifications shown below. a. confidence level 90%, σ=19, and e=6 b. confidence level 95%, σ=23, and e=0.7 c. confidence level 98%, σ=0.5, and e=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

Calculate the smallest sample size required to estimate the population mean under the specifications shown below.

a. confidence level

90%,

σ=19,

and

e=6

b. confidence level

95%,

σ=23,

and

e=0.7

c. confidence level

98%,

σ=0.5,

and

e=1

d. confidence level

99%,

σ=1.4,

and

e=0.6

e. confidence level

98%,

σ=5,

and

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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