Author Question: In a random sample of n = 400 people, 40 say they have allergies. The conservative margin of error ... (Read 133 times)

kaid0807 · **on:** Jul 24, 2018

In a random sample of n = 400 people, 40 say they have allergies. The conservative margin of error is reported to be 5. What is a 95 confidence interval for the percent of the population that has allergies?
a. 25 to 55
b. 30 to 50
c. 35 to 45
d. 40 to 45

Question 2

A polling agency conducted a survey of 100 doctors on the question: Are you willing to treat women patients with the recently approved pill RU-486? The conservative margin of error associated with the 95 confidence interval for the percent who say yes' is
a. 50.
b. 10.
c. 5.
d. 2.