BuyFindarrow_forward

Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
ISBN: 9781305504912

Solutions

Chapter
Section
BuyFindarrow_forward

Statistics for The Behavioral Scie...

10th Edition
Frederick J Gravetter + 1 other
ISBN: 9781305504912
Textbook Problem

A sample of n = 7 scores has a mean of M = 16. One

score in the sample is changed from X = 6 to X = 20.

What is the value for the new sample mean?

To determine

Find the new sample mean when one score in the sample is changed from X=6 to X=20 .

Explanation

When one score in the sample is changed from X=6 to X=20 , the new sum can be calculated by subtracting 6 and adding 20 to the old sum. The mean is the average of scores. To find mean, divide the sum by number of scores in the sample. Therefore:

M= X n                                                      ...Equation (1)

In this problem, we want to find X . So, multiply Equation (1) by n both sides.

M×n= X n × n X =M×n

Given:

n=7 and M=16 . One score in the sample is changed from X=6 to X=20 .

Formula used:

M= X n X =M×n

Calculations:

First find the sum of scores for original data

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

Polynomials Find the sum, difference, or product. 21. 8(2x + 5) 7(x 9)

Precalculus: Mathematics for Calculus (Standalone Book)

In Exercises 7-28, perform the indicated operations and simplify each expression. 7. 2a22b2ba4a+4ba2+2ab+b2

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

In Problems 51 and 52, rationalize the numerator of each fraction and simplify. 51.

Mathematical Applications for the Management, Life, and Social Sciences

Find the exact perimeter and area of the sector shown.

Elementary Geometry For College Students, 7e

Prove the identity sin2x=2tanx+cotx.

Trigonometry (MindTap Course List)

Finding a Derivative In Exercises 13-32, find the derivative of the function. y=13x+5

Calculus: Early Transcendental Functions (MindTap Course List)

The average value of f(x) = 3x2 + 1 on the interval [2, 4] is: a) 29 b) 66 c) 58 d) 36

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