The television show CSI: Shoboygan has been successful for many years. That show recently had a share of 23, which means, that among the TV sets in use, 23% were tuned to CSI: Shoboygan. An advertiser wants to verify that 23% 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 CSI: Shoboygan broadcast. Find the probability that none of the households are tuned to CSI: Shoboygan. P(none) = Find the probability that at least one household is tuned to CSI: Shoboygan. P(at least one) = Find the probability that at most one household is tuned to CSI: Shoboygan. P(at most one) = If at most one household is tuned to CSI: Shoboygan, does it appear that the 23% share value is wrong? (Hint: Is the occurrence of at most one household tuned to CSI: Shoboygan unusual?)

• yes, it is wrong
• no, it is not wrong