The safety director of a large steel mill took samples at random from company records of minor work-related accidents and classified them according to the time the accident took place.   Time Number of Accidents Time Number of Accidents 8 up to 9 a.m. 10 1 up to 2 p.m. 11 9 up to 10 a.m. 9 2 up to 3 p.m. 12 10 up to 11 a.m. 12 3 up to 4 p.m. 7 11 up to 12 p.m. 6 4 up to 5 p.m. 11      Click here for the Excel Data File   Using the goodness-of-fit test and the 0.10 level of significance, determine whether the accidents are evenly distributed throughout the day.   H0: The accidents are evenly distributed throughout the day. H1: The accidents are not evenly distributed throughout the day.   a. State the decision rule, using the 0.10 significance level. (Round your answer to 3 decimal places.)       b. Compute the value of chi-square. (Round your answer to 3 decimal places.)       c. What is your decision regarding H0?

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
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The safety director of a large steel mill took samples at random from company records of minor work-related accidents and classified them according to the time the accident took place.
 

Time Number of Accidents Time Number of Accidents
8 up to 9 a.m. 10 1 up to 2 p.m. 11
9 up to 10 a.m. 9 2 up to 3 p.m. 12
10 up to 11 a.m. 12 3 up to 4 p.m. 7
11 up to 12 p.m. 6 4 up to 5 p.m. 11

 

 

 Click here for the Excel Data File
 
Using the goodness-of-fit test and the 0.10 level of significance, determine whether the accidents are evenly distributed throughout the day.
 
H0: The accidents are evenly distributed throughout the day.
H1: The accidents are not evenly distributed throughout the day.
 
a. State the decision rule, using the 0.10 significance level. (Round your answer to 3 decimal places.)
 

 


 
b. Compute the value of chi-square. (Round your answer to 3 decimal places.)
 

 


 
c. What is your decision regarding H0?
 

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