Question

The television show Ghost Whistler has been successful for many years. That show recently had a share of 21, meaning that among the TV sets in use, 21% were tuned to Ghost Whistler. Assume that an advertiser wants to verify that 21% share value by conducting its own survey, and a pilot survey begins with 12 households have TV sets in use at the time of a Ghost Whistler broadcast.

Binomial Calculator

Find the probability that none of the households are tuned to Ghost Whistler. P(none) =

Find the probability that at least one household is tuned to Ghost Whistler. P(at least one) =

Find the probability that at most one household is tuned to Ghost Whistler. P(at most one) =

If at most one household is tuned to Ghost Whistler, does it appear that the 21% share value is wrong?

(Hint: Is the occurrence of at most one household tuned to Ghost Whistler unusual?)

yes, it is wrong

no, is it not wrong

it is not wrong

Answer 1