n a survey of 3300 adults, 1499 say they have started paying bills online in the
ID: 3055221 • Letter: N
Question
n a survey of 3300 adults, 1499 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results. A 99% confidence interval for the population proportion is OD Round to three decimal places as needed.) nterpret your results. Choose the correct answer below. O A. The endpoints of the given confidence interval show that adults pay bills online 99% of the time. O B. With 99% confidence, it can be said that the sample proportion of adults who say they have started paying bills online in the last year is between the endpoints of the given confidence intervalExplanation / Answer
Ans:
Given that
sample proportion=1499/3300=0.4542
99% confidence interval for population proportion,p
=0.4542+/-2.58*sqrt(0.4542*(1-0.4542)/3300)
=0.4542+/-0.0224
=(0.432, 0.477)
Option C is correct.
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