A researcher wishes to estimate, with 95% confidence, the percentage of adults who support abolishing the...
A researcher wishes to estimate, with 95% confidence, the percentage of adults who support abolishing the penny. His estimate must be accurate within 5% of the true proportion.
a) Find the minimum sample size needed, using a prior study that found that 32% of the respondents said they support abolishing the penny
. b) No preliminary estimate is available. Find the minimum sample size needed. a) What is the minimum sample size needed using a prior study that found that 32% of the respondents said they support abolishing the penny? n= __ (Round up to the nearest whole number as needed.)
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A researcher wishes to estimate, with 95% confidence, the
percentage of adults who support abolishing the...
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A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling...
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n= A researcher wishes to estimate, with 90% confidence, the population proportion of adults who support...
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A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size...
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 95% confidence if(a) he uses a previous estimate of 32%? (b) he does not use any prior estimates? (a) nequals=nothing (Round up to the nearest integer.)(b) nequals=nothing (Round up to the nearest integer.)
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A researcher wishes to estimate, with 99% confidence, the population proportion of adults who support labeling legislation for genetically modified organisms (GMOs). Her estimate must be accurate within 6% of the true 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 83% of the respondents said they support labeling legislation for GMOs. (c) Compare the results from parts (a) and (b).
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