A researcher wishes to estimate, with 95% confidence, the population proportion of adults who eat fast food four to si
Posted: Sun Jul 10, 2022 10:19 am
A researcher wishes to estimate, with 95% confidence, thepopulation proportion of adults who eat fast food four to six timesper week. Her estimate must be accurate within
5% of the population proportion.
(a) No preliminary estimate is available. Find the minimumsample size needed.
(b) Find the minimum sample size needed, using a priorstudy that found that
46%
of the respondents said they eat fast food four to six times perweek.
(c) Compare the results from parts (a) and (b).
(a) What is the minimum sample size needed assuming that noprior information is available?
n=enter your response here
(Round up to the nearest whole number as needed.)
5% of the population proportion.
(a) No preliminary estimate is available. Find the minimumsample size needed.
(b) Find the minimum sample size needed, using a priorstudy that found that
46%
of the respondents said they eat fast food four to six times perweek.
(c) Compare the results from parts (a) and (b).
(a) What is the minimum sample size needed assuming that noprior information is available?
n=enter your response here
(Round up to the nearest whole number as needed.)