A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtain
ed if she wishes the estimate to be within 0.03 with 99% confidence if (a) she uses a previous estimate of 0.36? (b) she does not use any prior estimates? (a) nequals nothing (Round up to the nearest integer.)
The difference between nonprobability and probability sampling is that nonprobability sampling does not involve random selection and probability sampling does.
