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?Which of the following statements is correct X-Y-Do T = A O the pooled-variances t-test: is used whenever the population standard deviations can be assumed to Sp n1 n2 .be equal .the z-test can be used when the population standard deviation are known regardless of the sample sizes .BO all of the statements are true .C O the z-test can be used when the population standard deviation are unknown but sample sizes are large (typically greater .D O than 30)

?Which of the following statements is correct X-Y-Do T = A O the pooled-variances t-test: is used whenever the population standard deviations can be assumed to Sp n1 n2 .be equal .the z-test can be used when the population standard deviation are known regardless of the sample sizes .BO all of the statements are true .C O the z-test can be used when the population standard deviation are unknown but sample sizes are large (typically greater .D O than 30)

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 19PFA
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?Which of the following statements is correct X-Y-Do T = the pooled-variances t-test : A O is used whenever the population standard deviations can be assumed to .be equal .the z-test can be used when the population standard deviation are known regardless of the sample sizes .BO all of the statements are true .C O the z-test can be used when the population standard deviation are unknown but sample sizes are large (typically greater .D O than 30) none of the statements are true. .E O
Transcribed Image Text:?Which of the following statements is correct X-Y-Do T = the pooled-variances t-test : A O is used whenever the population standard deviations can be assumed to .be equal .the z-test can be used when the population standard deviation are known regardless of the sample sizes .BO all of the statements are true .C O the z-test can be used when the population standard deviation are unknown but sample sizes are large (typically greater .D O than 30) none of the statements are true. .E O
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