Question

In a clinical​ study,

41004100

healthy subjects aged​ 18-49 were vaccinated with a vaccine against a seasonal illness. Over a period of roughly 28​ weeks,

2828

of these subjects developed the illness. Complete parts a through e below.

Find the margin of error for a

9595​%

confidence interval.

The margin of error is

nothing.

​(Round to five decimal places as​ needed.)

Answer 1

Solution :

Given that,

Point estimate = sample proportion = = x / n = 28 / 4100 = 0.00683

Z_/2 = 1.96

Margin of error = E = Z _{/ 2} * (( * (1 - )) / n)

= 1.96 * (((0.00683 * 0.99317) / 4100)

= 0.00252

Margin of error = 0.00252