Solutions Statistics

On June 1, 2001, 13 people became ill after attending a retirement dinner for a colleague. The sympt

Question: On June 1, 2001, 13 people became ill after attending a retirement dinner for a colleague. The symptoms were acute gastritis, vomiting, and fever. Using the food histories in the following table for the 20 individuals attending the dinner, construct an attack rate table and determine the most likely source of the outbreak. Justify your response.

Person	Became Ill?	Ate Beef?	Ate Chicken?	Ate Salad?
1	yes	yes	yes	yes
2	yes	yes	yes	no
3	yes	no	yes	yes
4	No	yes	NO	NO
5	YES	YES	NO	YES
6	NO	YES	NO	NO
7	YES	YES	YES	YES
8	YES	YES	NO	YES
9	YES	NO	YES	NO
10	NO	NO	YES	NO
11	YES	YES	YES	NO
12	NO	NO	NO	YES
13	NO	NO	NO	NO
14	YES	YES	YES	YES
15	NO	N O	NO	YES
16	NO	NO	YES	NO
17	YES	YES	NO	YES
18	YES	YES	NO	YES
19	YES	YES	YES	NO
20	YES	YES	YES	NO