SOLUTION: determine the sample size required to be 95% confident that the percentage of adults who text (claimed to be 22% in a random sample of 135 adults) is in error by no more than 3 per
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Question 301443: determine the sample size required to be 95% confident that the percentage of adults who text (claimed to be 22% in a random sample of 135 adults) is in error by no more than 3 percentage points. identify all variable used in your calculation. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! determine the sample size required to be 95% confident that the percentage of adults who text (claimed to be 22% in a random sample of 135 adults) is in error by no more than 3 percentage points.
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n = [z/E]^2(pq)
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n = [1.96/0.03]^2(0.22*0.78)
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n = 732.46
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Round up to n = 733
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Cheers,
Stan H.
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