A survey claims that 9 out of 10 doctors recommend brand W for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand W is less than 90%, a random sample of 100 doctors results in 85 who indicate that they recommend brand W. 1. Should this be a one-tailed or two-tailed test? 2. What is the value of the test statistic? 3. Determine the p-value.

A survey claims that 9 out of 10 doctors recommend brand W for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand W is less than 90%, a random sample of 100 doctors results in 85 who indicate that they recommend brand W. 1. Should this be a one-tailed or two-tailed test? 2. What is the value of the test statistic? 3. Determine the p-value.

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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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1. Should this be a one-tailed or two-tailed test?

2. What is the value of the test statistic?

3. Determine the p-value.

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