A researcher wishes to estimate, with 90% confidence, the proportion of adults who have high-speed internet access. Her estimate must be accurate within 1% of the true proportion. What is the minimum sample size needed using a prior study that found that 54% of the respondents said they have high-speed internet access? What is the minimum sample size needed assuming that no preliminary estimate is available?
A) What is the minimum sample size needed using a prior study that found that 54% of the respondents said they have high-speed Internet acess?
n= Round up to the nearest whole number as needed
b) What is the minimum smaple size needed assuming that no preliminary estimate is available?
n= round up to the nearest whole number as needed.