The television show Ghost Whistler has been successful for many years.
That show recently had a share of 27, meaning that among the TV sets in use, 27% were tuned to Ghost Whistler.
Assume that an advertiser wants to verify that 27% 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.
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 27% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Ghost Whistler unusual?)
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 27% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Ghost Whistler unusual?)