Question
(6.3) .6 A researcher wishes to estimate, with 95% confidence, the population proportion of adults who eat fast food four to six times per week.
(6.3) .6
A researcher wishes to estimate, with
95%
confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within
4%
of the population proportion.
(a) No preliminary estimate is available. Find the minimum sample size needed.
(b) Find the minimum sample size needed, using a prior study that found that
32%
of the respondents said they eat fast food four to six times per week.
(c) Compare the results from parts (a) and (b).
Question content area bottom
Part 1
(a) What is the minimum sample size needed assuming that no prior information is available?
n=enter your response here
(Round up to the nearest whole number as needed.)
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