Question

In the 1900 I love the report stated that 22% of Coke in America contained cocaine to test this a random sample of 500 Coke bottles were selected from the sample of 276 contain cocaine with a mean of 1.1 g of cocaine per bottle.

construct a 99% confidence interval to estimate the actual proportion of cocaine in coke bottles in America.

a. identify the upper and lower bound intervals
b. what is the margin of error?

Answer 1

(a)

Lower bound = 0.4948

Upper bound = 0.6092

(b)

The margin of error is

ME = 0.0572