Is America’s romance with movies on the wane? In a Gallup Poll of n = 800 randomly chosen adults, 45% indicated that movies were getting better wherea

Jaden Easton 2021-02-25 Answered
Is America’s romance with movies on the wane? In a Gallup Poll of n = 800 randomly chosen adults, 45% indicated that movies were getting better whereas 43% indicated that movies were getting worse. Find a 98% confidence interval for p, the overall proportion of adults who say that movies are getting better.
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Expert Answer

SkladanH
Answered 2021-02-26 Author has 80 answers

P=0.45
α=0.02
n800
CI=P±z(α/2)(P(1P)N=0.45±2.33(0.45(10.45)800
98%CI=0.45±0.041=[0.409,0.491]

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