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3. A survey found 195 of 250 randomly selected Internet users have high-speed Internet access at...

3. A survey found 195 of 250 randomly selected Internet users have high-speed Internet access at home. Construct a 90% confidence interval for the proportion of all Internet users who have high-speed Internet access at home.  (Round to the nearest thousandth)

4. You want to estimate the proportion of adults who have a fear of snakes (ophidiophobia). What sample size should be obtained if you want the estimate to be within 3 percentage points with 95% confidence if you do not use any prior estimate? (Round UP to the nearest whole number)

*can someone please help me with these im so lost

Math   Statistics-And-Probability   
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