A researcher wishes to estimate, with 99% confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 2% 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 34% of the respondents said they eat fast food four to six times per week. (c) Compare the results from parts (a) and (b).
A researcher wishes to estimate, with 99% confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 2% 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 34% of the respondents said they eat fast food four to six times per week. (c) Compare the results from parts (a) and (b).
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 8E: List the sample space of each experiment. Picking a one-digit number
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A researcher wishes to estimate, with
99% confidence, the population proportion of adults who eat fast food four to six times per week. Her estimate must be accurate within 2% of the population proportion.
(a) No preliminary estimate is available. Find the minimum
(b) Find the minimum sample size needed, using a prior study that found that 34% of the respondents said they eat fast food four to six times per week.
(c) Compare the results from parts (a) and (b).
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