A statistician randomly selected 20 classrooms which were used for the recently concluded Physician's Licensure Examination to check if the room temperatures affected the performance of the test takers. During data collection, he recorded a sample mean temperature of 22°C and a sample standard deviation of 7.2°C. Find the 90% confidence interval that contains the true value of the parameter. 19.22°C<µ<24.78°C B 18.99°C <µ<26.21°C © 24.17°C <µ<26.38°C D 21.03°C

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
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A statistician randomly selected 20 classrooms which were used for the recently concluded Physician's
Licensure Examination to check if the room temperatures affected the performance of the test takers. During
data collection, he recorded a sample mean temperature of 22°C and a sample standard deviation of 7.2°C.
Find the 90% confidence interval that contains the true value of the parameter.
A
19.22°C<µ<24.78°C
18.99°C <µ<26.21°C
© 24.17°C<µ<26.38°C
(D 21.03°C<µ<24.78°C
Transcribed Image Text:A statistician randomly selected 20 classrooms which were used for the recently concluded Physician's Licensure Examination to check if the room temperatures affected the performance of the test takers. During data collection, he recorded a sample mean temperature of 22°C and a sample standard deviation of 7.2°C. Find the 90% confidence interval that contains the true value of the parameter. A 19.22°C<µ<24.78°C 18.99°C <µ<26.21°C © 24.17°C<µ<26.38°C (D 21.03°C<µ<24.78°C
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