all-business telephone users were surveyed 6 months after access to carriers other than Carrier A became available for wide-area telephone service. Of a random sample of rier A users, 145 said they were attempting to learn more about their options, as did 152 of an independent random sample of 220 users of alternate carriers. Test, at the 5% nificance level against a two-sided alternative, the null hypothesis that the two population proportions are the same. et Px be the proportion of Carrier A users who said they were attempting to learn more about their options and Py be the proportion of users of alternate carriers who said they we tempting to learn more about their options. Determine the null and alternative hypotheses. Choose the correct answer below. A. Ho: Px-Py = 0 H₁: Px-Py ≤0 OD. Ho: Px-Py #0 H₁: Px-Py = 0 O B. Ho: Px - Py = 0 H₁: Px - Py#0 O E. Ho: Px - Py = 0 H₁: Px - Py>0 The test statistic is Z=. (Round to two decimal places as needed.) OC. Ho: Px-Py = 0 H₁: Px-Py <0 OF. Ho: Px-Py = 0 H₁: Px-Py 20

all-business telephone users were surveyed 6 months after access to carriers other than Carrier A became available for wide-area telephone service. Of a random sample of rier A users, 145 said they were attempting to learn more about their options, as did 152 of an independent random sample of 220 users of alternate carriers. Test, at the 5% nificance level against a two-sided alternative, the null hypothesis that the two population proportions are the same. et Px be the proportion of Carrier A users who said they were attempting to learn more about their options and Py be the proportion of users of alternate carriers who said they we tempting to learn more about their options. Determine the null and alternative hypotheses. Choose the correct answer below. A. Ho: Px-Py = 0 H₁: Px-Py ≤0 OD. Ho: Px-Py #0 H₁: Px-Py = 0 O B. Ho: Px - Py = 0 H₁: Px - Py#0 O E. Ho: Px - Py = 0 H₁: Px - Py>0 The test statistic is Z=. (Round to two decimal places as needed.) OC. Ho: Px-Py = 0 H₁: Px-Py <0 OF. Ho: Px-Py = 0 H₁: Px-Py 20

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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