BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570

Solutions

Chapter
Section
BuyFindarrow_forward

Essentials of Statistics for the B...

8th Edition
Frederick J Gravetter + 1 other
ISBN: 9781133956570
Textbook Problem

For a population with σ = 12, how large a sample is necessary to have a standard error that is:

a. less than 4 points?

b. less than 3 points?

c. less than 2 point?

a.

To determine
The sample size.

Explanation

Given info:

Population standard deviation is σ=12 and the standard error is less than 4 points.

Calculation:

Let σM represents the standard error and σ represents population standard deviation. Then,

σM<4σ=12

Let n represents the sample size and it can be determined from the relation:

σM=σn

Substitute; there exists inverse relationship between sample size and standard error, so inequality will be reversed when we substitute maximum value of standard error

b.

To determine
The sample size.

c.

To determine
The sample size.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

In Exercises 75-98, perform the indicated operations and/or simplify each expression. 94. (x2 1)(2x2 x2(2x)

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Find the critical numbers of the function. g(t) = |3t 4|

Single Variable Calculus: Early Transcendentals, Volume I

Using tan2 x = sec2 x − 1, ∫ tan3 x dx =

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

converges to: 2 the series diverges

Study Guide for Stewart's Multivariable Calculus, 8th