Suppose a random sample of 110 companies taken in 2005 showed that 26 offered high-deductible health insurance plans to their workers. A separate random sample of 120 firms taken in 2006 showed that 31 offered high-deductible health insurance plans to their workers. Based on the sample results, can you conclude that there is a higher proportion of companies offering high-deductible health insurance plans to their workers in 2006 than in 2005? Conduct your hypothesis test at a level of significance α=0.02. Let p1 be the population proportion from 2006, and let p2 be the population proportion from 2005. F. H0: p1−p2≤0 HA: p1−p2>0
Suppose a random sample of 110 companies taken in 2005 showed that 26 offered high-deductible health insurance plans to their workers. A separate random sample of 120 firms taken in 2006 showed that 31 offered high-deductible health insurance plans to their workers. Based on the sample results, can you conclude that there is a higher proportion of companies offering high-deductible health insurance plans to their workers in 2006 than in 2005? Conduct your hypothesis test at a level of significance α=0.02. Let p1 be the population proportion from 2006, and let p2 be the population proportion from 2005. F. H0: p1−p2≤0 HA: p1−p2>0
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Suppose a random sample of 110 companies taken in 2005 showed that
26 offered high-deductible health insurance plans to their workers. A separate random sample of 120 firms taken in 2006 showed that 31
offered high-deductible health insurance plans to their workers. Based on the sample results, can you conclude that there is a higher proportion of companies offering high-deductible health insurance plans to their workers in 2006 than in 2005? Conduct your hypothesis test at a level of significance α=0.02.Let p1 be the population proportion from 2006, and let p2 be the population proportion from 2005.
F. H0: p1−p2≤0
HA: p1−p2>0
Determine the critical value(s).
z Subscript alpha zα =2.052.05 (already done)
(Use a comma to separate answers as needed.
Round to two decimal places as needed.)
Calculate the test statistic.
z=_____
(Round to four decimal places as needed.)
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