Question
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
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] |
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