In a sample of 22 people, the average cost of a cup of coffee is $2.83. Assume the population standard deviation is $1.01. What is the 90% confidence interval for the cost of a cup of coffee? A) ($2.45 , $3.21) B) ($2.48 , $3.18) C) ($2.55 , $3.11) D) ($2.54 , $3.12)
In a sample of 22 people, the average cost of a cup of coffee is $2.83. Assume the population standard deviation is $1.01. What is the 90% confidence interval for the cost of a cup of coffee? A) ($2.45 , $3.21) B) ($2.48 , $3.18) C) ($2.55 , $3.11) D) ($2.54 , $3.12)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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In a sample of 22 people, the average cost of a cup of coffee is $2.83. Assume the population standard deviation is $1.01. What is the 90% confidence interval for the cost of a cup of coffee?
A) ($2.45 , $3.21)
B) ($2.48 , $3.18)
C) ($2.55 , $3.11)
D) ($2.54 , $3.12)
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