3401183 3401183

21-11-2022
Mathematics

Answered

9. Football on TV A recent Gallup poll conducted telephone interviews with a random sample of 1000 adults aged 18 and
older. Of these, 37% said that football is their favorite sport to watch on television. The margin of error for this estimate
is 3.1 percentage points.
a) Interpret the margin of error.
b) Would you be surprised if a census revealed that the population proportion was 0.50? Explain.
c) Explain how Gallup could decrease the margin of error.

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