Your local health department conducts a course on foodhandling. To evaluate this
ID: 2914258 • Letter: Y
Question
Your local health department conducts a course on foodhandling. To evaluate this course you select an SRS ofrestaurants from the list of licensed restaurants. For theserestaurants in your sample, you then search the list of violationsfound by the health department during the last two years as well asthe list of restaurants with employees who have attended the courseduring the last two years. For the 86 samples restaurants thedata can be presented as follows ATTENDEDCOURSE YES NO TOTAL Yes 9 28 37 No 36 13 49 Total 45 41 86 Use an appropriate procedure to test the hypothesis of noassociation between course attendance and the occurance of aviolation at the 0.10 significance level Your local health department conducts a course on foodhandling. To evaluate this course you select an SRS ofrestaurants from the list of licensed restaurants. For theserestaurants in your sample, you then search the list of violationsfound by the health department during the last two years as well asthe list of restaurants with employees who have attended the courseduring the last two years. For the 86 samples restaurants thedata can be presented as follows ATTENDEDCOURSE YES NO TOTAL Yes 9 28 37 No 36 13 49 Total 45 41 86 Use an appropriate procedure to test the hypothesis of noassociation between course attendance and the occurance of aviolation at the 0.10 significance levelExplanation / Answer
Attendedcourse
Yes
No
Total
Yes
9
28
37
No
36
13
49
Total
45
41
86
Yes
No
Yes
19.3604651
17.6395349
No
25.6395349
23.3604651
Oi
Ei
(Oi-Ei)^2
(Oi-Ei)^2/Ei
9
19.3604651
107.339237
5.544249
36
25.6395349
107.339237
4.186474
28
17.6395349
107.339237
6.085151
13
23.3604651
107.339237
4.59491
Total
20.41078
Attendedcourse
Yes
No
Total
Yes
9
28
37
No
36
13
49
Total
45
41
86
Yes
No
Yes
19.3604651
17.6395349
No
25.6395349
23.3604651
Oi
Ei
(Oi-Ei)^2
(Oi-Ei)^2/Ei
9
19.3604651
107.339237
5.544249
36
25.6395349
107.339237
4.186474
28
17.6395349
107.339237
6.085151
13
23.3604651
107.339237
4.59491
Total
20.41078
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