Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. what changes the width of a confidence interval a

What changes the width of a confidence interval A marketing director wants a 95 confidence...

50.1K

Verified Solution

Question

Statistics

image

What changes the width of a confidence interval A marketing director wants a 95 confidence interval for the mean cost of running shoes She randomly samples 40 pairs of shoes and finds that the sample mean was 122 with a sample standard deviation s of 27 The marketing director concluded with 95 confidence that between 113 36 and 130 64 contains the mean cost of all running shoes What would change for a wider confidence interval Select all answers that will make the width wider If the point estimate was larger If the sample size decreased to 30 pairs of shoes If the point estimate was smaller If she increased the confidence level to a 99 confidence level If the sample standard deviation was smaller If she decreased the confidence level to a 90 confidence interval If the sample standard deviation was larger If the sample size increased to 50 pairs of shoes

Answer & Explanation Solved by verified expert
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Medical Sciences
1.2K views

How is the concept of homeostasis (or its loss) related to disease and aging? Provide examples...

Physics
1.2K views

A +2.00 nC point charge and -3.00 nC point charge are placed along the x-axis at  x...

Geometry
1.2K views

7 Find the measure of angle STR 186 P S T 112 R

Algebra
1.2K views

77 4x 5y 5 9 1 9 2x 5y 0 5 3 2 11 y2...

Accounting
1.2K views

The direct labor budget of Yuvwell Corporation for the upcoming fiscal year contains...

Accounting
1.2K views

Customer Profitability Analysis \table[[Support activity,Driver,Cost per Driver Unit],[Major refinishes,Hours on jobs,$80

Accounting
1.2K views

1)Let there be a Company A that has 100 thousand shares outstanding at the start...

Accounting
1.2K views

7) Mark Manufacturing had a product design that resulted in a $740 full cost of...

Accounting
1.2K views

Providing subunit managers with performance results and comparing targets to actual results would be an...

Accounting
1.2K views

You have decided to start saving money for your future. What is the future value...

Accounting
1.2K views

Aging of Receivables; Estimating Allowance for Doubtful Accounts Wig Creations Company supplies wigs and hair...

Accounting
1.2K views

The Kenya government budget for the fiscal year 2016/2017 had the following key budgetary items...