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An engineer wants to determine the effectiveness of a safety program. He collects annual loss of hours due to accidents in 12 plants before and after the program was put into operation. The accompanying table shows a portion of the data. Plant 2 1 Before 100 90 1 83 After 98 88 1 80 picture Click here for the Excel Data File Test statistic Let the difference be defined as Before - After a. Specify the competing hypotheses that determine whether the safety program was effective. Ho: HD 0; HA HD*O = OHO: HD 0: HA HD>0 OHO: HDZ 0; HA HD <0 b-1. Calculate the value of the test statistic. Assume that the hours difference is normally distributed. (Round intermediate calculations to at least 4 decimal places and final to 3 decimal places.)

An engineer wants to determine the effectiveness of a safety program. He collects annual loss of hours due to accidents in 12 plants before and after the program was put into operation. The accompanying table shows a portion of the data. Plant 2 1 Before 100 90 1 83 After 98 88 1 80 picture Click here for the Excel Data File Test statistic Let the difference be defined as Before - After a. Specify the competing hypotheses that determine whether the safety program was effective. Ho: HD 0; HA HD*O = OHO: HD 0: HA HD>0 OHO: HDZ 0; HA HD <0 b-1. Calculate the value of the test statistic. Assume that the hours difference is normally distributed. (Round intermediate calculations to at least 4 decimal places and final to 3 decimal places.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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b-2. Find the p-value. Op-value <0.01 O 0.01 s p-value < 0.025 O 0.025 s p-value < 0.05 c. At the 5% significance level, is there sufficient evidence to conclude that the safety program was effective? 10 11 12 18 16 15 0.05 s p-value <0.10 Op-value a 0.10 O Yes, since we reject Ho O No, since we reject Ho O Yes, since we do not reject Ho O No, since we do not reject Ho 1 Plant 21 3 2 4 3 54 6 5 7 6 8 7 98 Show Transcribed Text 14 10 9 16 11 10 12 11 13 12 A B Before 100 90 94 85 70 83 88 75 65 58 67 104 5 C After 98 88 90 86 67 80 90 70 62 60 60 98 S D E F
Transcribed Image Text:b-2. Find the p-value. Op-value <0.01 O 0.01 s p-value < 0.025 O 0.025 s p-value < 0.05 c. At the 5% significance level, is there sufficient evidence to conclude that the safety program was effective? 10 11 12 18 16 15 0.05 s p-value <0.10 Op-value a 0.10 O Yes, since we reject Ho O No, since we reject Ho O Yes, since we do not reject Ho O No, since we do not reject Ho 1 Plant 21 3 2 4 3 54 6 5 7 6 8 7 98 Show Transcribed Text 14 10 9 16 11 10 12 11 13 12 A B Before 100 90 94 85 70 83 88 75 65 58 67 104 5 C After 98 88 90 86 67 80 90 70 62 60 60 98 S D E F
An engineer wants to determine the effectiveness of a safety program. He collects annual loss of hours due to accidents in 12 plants before and after the program was put into operation. The accompanying table shows a portion of the data. Plant 1 2 : Before 100 90 1 83 After 98 88 + 60 picture Click here for the Excel Data File Let the difference be defined as Before - After. Test statistic a. Specify the competing hypotheses that determine whether the safety program was effective. ⒸHO: HD=0; HA HD*O Ho: HD 0; HA HD> 0 ⒸHO: HD 20: HA HD <0 b-1. Calculate the value of the test statistic. Assume that the hours difference is normally distributed. (Round intermediate calculations to at least 4 decimal places and final to 3 decimal places.)
Transcribed Image Text:An engineer wants to determine the effectiveness of a safety program. He collects annual loss of hours due to accidents in 12 plants before and after the program was put into operation. The accompanying table shows a portion of the data. Plant 1 2 : Before 100 90 1 83 After 98 88 + 60 picture Click here for the Excel Data File Let the difference be defined as Before - After. Test statistic a. Specify the competing hypotheses that determine whether the safety program was effective. ⒸHO: HD=0; HA HD*O Ho: HD 0; HA HD> 0 ⒸHO: HD 20: HA HD <0 b-1. Calculate the value of the test statistic. Assume that the hours difference is normally distributed. (Round intermediate calculations to at least 4 decimal places and final to 3 decimal places.)
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