Which of the following statements is ?correct the z-test can be used when the .A O population standard deviation are known regardless of the sample .sizes the z-test can be used when the .B O population standard deviation are unknown but sample sizes are (large (typically greater than 30 all of the statements are true .C O the pooled-variances t-test : .D O X-Y- Do T= is used whenever n2 the population standard deviations .can be assumed to be equal none of the statements are true. .E O

Which of the following statements is ?correct the z-test can be used when the .A O population standard deviation are known regardless of the sample .sizes the z-test can be used when the .B O population standard deviation are unknown but sample sizes are (large (typically greater than 30 all of the statements are true .C O the pooled-variances t-test : .D O X-Y- Do T= is used whenever n2 the population standard deviations .can be assumed to be equal none of the statements are true. .E O

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 32E

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