menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

A sample of 9 days over the past six months showed that a dentist treated the following numbers of patients: 22, 25, 20, 18, 15, 22, 24, 19, and 26. If the number of patients seen per day is normally distributed, would an analysis of these sample data reject the hypothesis that the variance in the number of patients seen per day is equal to 10? Use a .10 level of significance. What is your conclusion?

BuyFindarrow_forward

Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9781285846323

Solutions

Chapter
Section
BuyFindarrow_forward

Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
Publisher: South-Western College Pub
ISBN: 9781285846323
Chapter 11, Problem 29SE
Textbook Problem
231 views

A sample of 9 days over the past six months showed that a dentist treated the following numbers of patients: 22, 25, 20, 18, 15, 22, 24, 19, and 26. If the number of patients seen per day is normally distributed, would an analysis of these sample data reject the hypothesis that the variance in the number of patients seen per day is equal to 10? Use a .10 level of significance. What is your conclusion?

To determine

Check whether the sample data reject the hypothesis that the variance in the number of patients seen per day is equal to 10. Explain the conclusion.

Explanation of Solution

Calculation:

In a sample of 9 days, the dentist treated the following number of patients 22, 25, 20, 18, 15, 22, 24, 19, and 26.

Software procedure:

Step-by-step procedure to obtain the sample variance using the MINITAB software:

  • Choose Stat > Basic Statistics > Display Descriptive Statistics.
  • In Variables, enter the columns C1.
  • In Statistics, select variance.
  • Click OK.

Output using the MINITAB software is given below:

Thus, the sample variance is 12.69.

The hypotheses are given below:

Null hypothesis:

H0:σ2=10

Alternative hypothesis:

Ha:σ210

Test statistic:

Software procedure:

Step-by-step procedure to obtain the test statistic using the MINITAB software:

  • Choose Stat > Basic Statistics > 1-Sample variance.
  • Select sample variance.
  • In sample size, enter the value 9.
  • In sample variance, enter the value 12.69.
  • In Perform hypothesis test, enter Hypothesised variance.
  • In value, enter the value 10

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

Chapter 11 Solutions

Statistics for Business & Economics, Revised (MindTap Course List)
Show all chapter solutions
add

Additional Math Textbook Solutions

Find more solutions based on key concepts
Show solutions add
Why must researchers document their sources meticuousIy?

Essentials of Business Communication (MindTap Course List)

Which fluctuate morelong-term or short-term interest rates? Why?

Fundamentals of Financial Management, Concise Edition (MindTap Course List)

What does data cleansing mean?

Accounting Information Systems

Why might purchasing power parity fail to hold?

Fundamentals of Financial Management, Concise Edition (with Thomson ONE - Business School Edition, 1 term (6 months) Printed Access Card) (MindTap Course List)

Explain the difference between r and .

Introduction To Statistics And Data Analysis

What word is produced by 360 rotation about the point?

Elementary Geometry For College Students, 7e

find the real roots of each equation by factoring. 130. 3x2 x 4 = 0

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

Systems of Nonlinear Equations Solve the system of equations. 8. {x2+y2=8y=x+2

Precalculus: Mathematics for Calculus (Standalone Book)

Find a definite integral for the area of the surface of revolution about the x-axis obtained by rotating the cu...

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

Pet Owners According to the Humane Society, in 2015, 65% of U.S. households owned at least one pet, and 42% of ...

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

Add: (4)+(+5)+(8)+(+4)

Elementary Technical Mathematics