A researcher wishes to estimate, with 95% confidence,
A researcher wishes to estimate, with 95% confidence,
the population proportion of adults who are confident with their country’s banking system. His 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 25% of the respondents said they are confident with their country’s banking system.
(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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A researcher wishes to estimate, with 95% confidence, was first posted on February 27, 2020 at 8:59 pm.
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