2 Section 6.3 K Part 1 of 3 Points: 0 of 1 Save A researcher wishes to estimate, with 95% confidence, the population proportion of families who eat fast food at least once per week. Her estimate must be accurate within 5% 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 38% of the respondents said they eat fast food four to six times per week. (c) Compare the results from parts (a) and (b). (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.)
2 Section 6.3 K Part 1 of 3 Points: 0 of 1 Save A researcher wishes to estimate, with 95% confidence, the population proportion of families who eat fast food at least once per week. Her estimate must be accurate within 5% 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 38% of the respondents said they eat fast food four to six times per week. (c) Compare the results from parts (a) and (b). (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.)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Part 1 of 3
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A researcher wishes to estimate, with 95% confidence, the population proportion of families who eat fast food at least once per week. Her estimate must be accurate within 5% 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 38% of the respondents said they eat fast food four to six times per week.
(c) Compare the results from parts (a) and (b).
(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.)
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