Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. a survey of 25 randomly selected customers found t

A survey of 25 randomly selected customers found the ages shown (in years). The mean...

80.2K

Verified Solution

Question

Statistics

image

A survey of 25 randomly selected customers found the ages shown (in years). The mean is 33.12 years and the standard deviation is 10.20 years.a) Construct a 90% confidence interval for the mean age of all customers, assuming that the assumptions and conditions for the confidence interval have been met.b) How large is the margin of error?c) How would the confidence interval change if you had assumed that the population standard deviation was known to be 11.0 years?a) What is the confidence interval?(Round to two decimal places as needed.)

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

Finance
1.2K views

Fully explain how firms should return cash to shareholders? How are these decisions made, and what...

Programming
1.2K views

Please use java language in an easy way and comment as much as you can! Thanks (Write...

Statistics
1.2K views

The accompanying dataset shows the monthly number of new car sales in the last three...

Calculus
1.2K views

Find the coefficient a of the given term in the expansion of the binomial Binomial...

Algebra
1.2K views

Divide in 476517 The quotient is 145 R27

Accounting
1.2K views

Imperial Jewelers manufactures and sells a gold bracelet for $401.00. The companys accounting system says...

Accounting
1.2K views

when the corporation issuing the bond has the right to repurchase the bond prior to...

Accounting
1.2K views

The comparative statement of financial position for Clark Inc. as at December 31, 2020 and...

Accounting
1.2K views

Accounts payaule, De EXERCISES-SET A E13-1A. Classification of Cash Flows For each of the items...

Accounting
1.2K views

rey has two dependents, his daughters, ages 14 and 18, at year-end. Trey files a...

Finance
1.2K views

2. The Magnito Corporation issued a new series of bonds on January 1, 2015. It...

Finance
1.2K views

Homework: Chapter 11 Homework (Copy) Question 6, P 11-13 (similar to) HW Score: 27.27%, 3...