A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What sample size should be obtained if the researcher wishes to estimate within 0.03 with 99% confidence if a. He uses a 2007 estimate of 0.69 obtained from US Census Bureau? b. He does not use any prior estimate? c. Let the confidence level be 90%, and recalculate the needed sample size in both a) and b) above and comment on your conclusion.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.