The television show NBC Sunday Night Footbal broadcast a game between the Colts

Question

The television show NBC Sunday Night Footbal broadcast a game between the Colts and the Partiots and recieved a share of 22, meaning that among the TV sets in use, 22% were tuned into that game(based on data from Nielsen Media Research). An advertiser wants to obtain a second opinion by conducting its own survey, and a pilot survey beings with 20 households having TV sets in use at the time of the same NBC Sunday Night Football broadcast. Find the probability that none of the households are tuned to NBC Sunday Night Football.

Explanation / Answer

This is binomial distribution with p=0.22 and n=20

We know that P(x)=ncxp^x(1-p)^n-x

So P(x=0)=0.0069

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