In a randomized controlled trial in kenya, insecticide treated bednets were tested as a way to reduce malaria. among 343 infants using bednets, 15 developed malaria. among 294 infants not using bednets, 27 developed malaria. want to use a 0.01 significance level to test the claim that the incidence of malaria is lower for infants using bednets. find the test statistic

Step-by-step explanation:

Given that in a randomized controlled trial in Kenya, insecticide treated bednets were tested as a way to reduce malaria. Among 343 infants using bednets, 15 developed malaria. Among 294 infants not using bednets, 27 developed malaria.

H0: p1=p2

H1: p1 <p2

(one tailed test)

p1 = 15/343:p2 =27/294:

Difference4.813 %

95% CI0.9160% to 9.0217%

Chi-squared5.947

DF  1

Significance levelP = 0.0073

Since p <0.01 we reject null hypothesis.

11

step-by-step explanation:

32.50-7.50=25

225/25=11