Question 10

19Atelecommunication company wants to estimate the proportion of households that would purchase an additional telephone line if it were made available at a substantially reduced installation cost. Data are collected from a random sample of 500 households. The results indicate that 160 of the households would purchase the additional telephone line at a reduced installation cost. Construct a 95% confidence interval for the population proportion of households that would purchase the additional telephone line.

	A.	[0.279, 0.361]
	B.	[0.286, 0.354]
	C.	[0.271, 0.369]
	D.	[0.271, 0.354]