Mathematics, 07.12.2021 22:40 isaiahjohnson2594
In a random sample of 400 headache suffers, 85 prefer a particular brand of pain killer. How large a sample is required if we want to be 99% confidence that our estimate of percentage of people with headaches who prefer this particular brand of pain killer is within 2 percentage points? Round your answer to the next whole number
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In a random sample of 400 headache suffers, 85 prefer a particular brand of pain killer. How large a...
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