Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN: 9780547587776

Author: HOLT MCDOUGAL

Publisher: HOLT MCDOUGAL

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Question

A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There

are 285 subjects in the study. Is there sufficient evidence to determine if vaccination and disease

status are related?

Vaccination Status Diseased Not Diseased Total

Vaccinated 77 85 162

Not Vaccinated 63 60 123

Total 140 145 285

d) Find the value of the test statistic. Round your answer to three decimal places.

g) Make the decision to reject or fail to reject the null hypothesis at the 0.025 level of significance.

h) State the conclusion of the hypothesis test at the 0.025 level of significance.

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