In randomized, double-blind clinical trials of a
Question
In randomized, double-blind clinical trials of a
new vaccine, children
children were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the first dose, 114
114 of 704
704 subjects in the experimental group (group 1) experienced fever
fever as a side effect. After the first dose, 59
59 of 622
622 of the subjects in the control group (group 2) experienced fever
fever as a side effect. Construct a 95
95% confidence interval for the difference between the two population proportions, p 1 minus p 2
p1−p2. Use x 1 equals
x1=114
114, n 1 equals
n1=704
704, x 2 equals
x2=59
59, and n 2 equals
n2=622
622.
The 95
95% confidence interval for p 1 minus p 2
p1−p2 is (
nothing
,
nothing
).
(Use ascending order. Round to three decimal places as needed.)