In a study of the accuracy of fast food​ drive-through orders, one restaurant had 30 orders that were not accurate among 393 orders observed. Use a 0.05 significance level to test the claim that the rate of inaccurate orders is equal to​ 10%. Does the accuracy rate appear to be acceptable?

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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In a study of the accuracy of fast food​ drive-through orders, one restaurant had
30
orders that were not accurate among
393
orders observed. Use a
0.05
significance level to test the claim that the rate of inaccurate orders is equal to​ 10%. Does the accuracy rate appear to be acceptable?
 
Identify the test statistic for this hypothesis test.
 
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