Mathematics, 17.05.2021 20:40 Lena3055
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 1% 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 28% of the respondents said they eat fast food four to six times per week.
(a) What is the minimum sample size needed assuming that no prior information is available?
n=
(Round up to the nearest whole number as needed.)
(b) What is the minimum sample size needed using a prior study that found that 28% of the respondents said they eat fast food four to six times per week?
n=
(Round up to the nearest whole number as needed.)
Answers: 3
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A researcher wishes to estimate, with 95 % confidence, the population proportion of adults who ea...
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