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Name: A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z
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Description: A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of d

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of doctors was taken. Suppose the test statistic is z = -1.75. Can we conclude that H 0should be rejected at the a) α = 0.1, b)α = 0.05 and c)α = 0.01level?

Group of answer choices

a) no; b) no; c) no

a) yes; b) yes; c) no

a) no; b) no; c) yes

a) yes; b) yes; c) yes

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