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Determine if a Z-test, or a T-test should be performed. 3) A researcher would like to determine if college students get less than 8 hours of sleep per night on average. From a survey of 200 adult college students, the mean number of hours of sleep that a student gets per night was 7.58 hours with a sample standard deviation of 1.2 hours. What test should be performed: z-test or t-test 4) According to a certain credit card company the average credit card debt for all of their customers is $4500 with a standard deviation of $700. From a random sample of 50 of their customers, the average debt was $4250. What test should be performed: z-test or t-test

Determine if a Z-test, or a T-test should be performed. 3) A researcher would like to determine if college students get less than 8 hours of sleep per night on average. From a survey of 200 adult college students, the mean number of hours of sleep that a student gets per night was 7.58 hours with a sample standard deviation of 1.2 hours. What test should be performed: z-test or t-test 4) According to a certain credit card company the average credit card debt for all of their customers is $4500 with a standard deviation of $700. From a random sample of 50 of their customers, the average debt was $4250. What test should be performed: z-test or t-test

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 7PPS
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Determine if a Z-test, or a T-test should be performed. 3) A researcher would like to determine if college students get less than 8 hours of sleep per night on average. From a survey of 200 adult college students, the mean number of hours of sleep that a student gets per night was 7.58 hours with a sample standard deviation of 1.2 hours. What test should be performed: z-test or t-test 4) According to a certain credit card company the average credit card debt for all of their customers is $4500 with a standard deviation of $700. From a random sample of 50 of their customers, the average debt was $4250. What test should be performed: z-test or t-test
Transcribed Image Text:Determine if a Z-test, or a T-test should be performed. 3) A researcher would like to determine if college students get less than 8 hours of sleep per night on average. From a survey of 200 adult college students, the mean number of hours of sleep that a student gets per night was 7.58 hours with a sample standard deviation of 1.2 hours. What test should be performed: z-test or t-test 4) According to a certain credit card company the average credit card debt for all of their customers is $4500 with a standard deviation of $700. From a random sample of 50 of their customers, the average debt was $4250. What test should be performed: z-test or t-test
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