0%
0 / 15 answered

Difference of Two Population Proportions (Test) Practice Test

15 Questions
Question
1 / 15
Q1

A public health researcher wants to know whether the proportion of adults who received a flu shot differs between City 1 and City 2. In a random sample of 250 adults from City 1, 145 reported getting a flu shot. In a random sample of 220 adults from City 2, 110 reported getting a flu shot. A two-proportion $z$ test was conducted for $H_0: p_1=p_2$ versus $H_a: p_1\ne p_2$, yielding a p-value of 0.018. Using $\alpha=0.05$, what conclusion is appropriate?

Question Navigator