What is the estimated 95% confidence interval (CI) of the proportion

of schoolchildren developing nausea and vomiting following holiday parties?
Please note the following: 1) 0 and 1 are defined as no and yes, respectively, which is a typical coding scheme in Public Health; 2) you might calculate a CI that is different from any of the multiple choice options listed below due to rounding differences, therefore select the closest match; and 3) you may copy and paste the data into Excel to facilitate analysis.
Select one:
a. 0.287 to 0.879
b. 0.326 to 0.785
c. 0.355 to 0.887
d. 0.292 to 0.711
Subject
Nausea and
Vomiting?
1
0
2
1
3
1
4
1
5
0
6
1
7
0
8
1
9
0
10
1
11
1
12
1
13
1
14
0
15
0
16
0
17
0
18

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