A researcher wishes to determine, with 95% confidence, the proportion of adults who have high-speed internet access. Her estimate should be accurate in 5% of the true proportion.
1) Find out the minimum sample size required, using a prior study that found that 52% of the respondents said they have high-speed Internet access.
2) No preliminary estimate is available. Find out the minimum sample size required.
A) What is the minimum sample size required, using a prior study that found that 52% of respondents said they have high-speed Internet access.
n = ____ (Round up to the nearest whole number asneeded.)
B) What is ther minimum sample size required supposing that no preliminary estimate is available?
n = ____ (Round up to the nearest whole number as needed.)