statistic business
A telecommunications 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 that140 of the households would purchase the additional telephone line at a reduced installation cost. Complete parts (a) and (b) below.
a. Construct a 95%confidence interval estimate for the population proportion of households that would purchase the additional telephone line.
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