Find the minimum sample size needed

Reference no: EM13116060

A researcher wishes to estimate, with 90% confidence, the proportion of adults who have high-speed Internet access. Her estimate must be accurate within 2% of the true proportion.

a)Find the minimum sample size needed, using a prior study that found that 36% of the respondents said they have high speed Internet access

b) No preliminary estimates is available. Find the minimum sample size needed.

Reference no: EM13116060

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