Question

Question help a phone company would like to estimate the proportion of households that use cell phones for their phone service without a land line. a random sample of 150 households was selected and 48 relied strictly on cell phones for their service. using thisâ sample, what is the point estimate for the proportion of households without landâ lines?

Answer 1

I would say the point estimate is 48/150=0.32 or 32% of the households surveyed did not have land lines, only cell phones. A point estimate is a discrete value used as an estimate of a population parameter. This is opposed to an interval estimate so that the value of a population parameter is an interval with a stated probability of occurring.