A popular professor wants to construct a 90% confidence
interval with a margin of error =...
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Statistics
A popular professor wants to construct a 90% confidenceinterval with a margin of error = 0.03 on the proportion ofstudents that make a thorough “cheat sheet†for her statisticstests.
(4 points) Through experience, the professor estimates thatabout 42% of students make thorough “cheat sheets.†Using thisestimate for the sample proportion, how many students should theprofessor sample?
(4 points) How many students should the professor sample if noestimate is available?
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Solution Given that 0421 1 042 058margin of error E 003At 90
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