(Answered) Part 1 a researcher wishes to estimate the proportion of

Statistics

Part 1. A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within

0.04 with 99% confidence if

a) she uses a previous estimate of 0.42? Round up to the nearest integer.

b) she does not use any prior estimates? Round up to the nearest integer.

Part 2.

Use the given data to find the minimum sample size required to estimate a population proportion or percentage.

Margin of error: 0.04; confidence level 95%; p-hat with q-hat unknown. Round up to the nearest integer.

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