In a sample of 22 people, the average cost of a cup of coffee is $2.95. Assume the population standard deviation is $0.92. What is the 90% confidence interval for the cost of a cup of coffee? Group of answer choices ($2.70, $3.20) ($2.69, $3.21) ($2.63, $3.27) ($2.60, $3.30)

In a sample of 22 people, the average cost of a cup of coffee is $2.95. Assume the population standard deviation is $0.92. What is the 90% confidence interval for the cost of a cup of coffee? Group of answer choices ($2.70, $3.20) ($2.69, $3.21) ($2.63, $3.27) ($2.60, $3.30)

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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Question

In a sample of 22 people, the average cost of a cup of coffee is $2.95. Assume the population standard deviation is $0.92. What is the 90% confidence interval for the cost of a cup of coffee?

Group of answer choices

($2.70, $3.20)

($2.69, $3.21)

($2.63, $3.27)

($2.60, $3.30)

thanks

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