A survey of 25 randomly selected customers found the ages shown (in years). The mean is 32.56 yearsand the standard deviation is 9.21 years. a) Construct a 99% confidence interval for the mean age of allcustomers, assuming that the assumptions and conditions for the confidence interval have been met. b)How large is the margin of error?41, 39, 36, 29, 3437, 26, 47, 28, 47 20, 19, 21, 14, 36 41, 32, 26, 40, 31 20, 47, 36, 36, 31 c) How wouldthe confidence interval change if you had assumed that the population standard deviation was known tobe 10.0 years? a) What is the confidence interval? (Round to two decimal places as needed.)A survey of 25 randomly selected customers found the ages shown (in years). The mean is32.56 years and the standard deviation is 9.21 years.a) Construct a 99% confidence interval for the mean age of all customers, assuming that theassumptions 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 standarddeviation was known to be 10.0 years?a) What is the confidence interval?(Round to two decimal places as needed.)BDQ241 39 36 29 34037 26 47 28 4720 19 21 14 3641 32 26 40 3120 47 36 36 31:

A confidence interval in statistics is a range of estimated values within a set parameter.To…

Answered: A survey of 25 randomly selected…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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