The television showPretty Bettyhas been successful for many years. That show recently had a share of 21, meaning that among the TV sets in use, 21% were tuned toPretty Betty. Assume that an advertiser wants to verify that 21% share value by conducting its own survey, and a pilot survey begins with 15 households that have TV sets in use at the time of aPretty Bettybroadcast.

Round solutions to four decimal places, if necessary.

Find the probability that none of the households are tuned toPretty Betty.

P(none) =

Find the probability that at least one household is tuned toPretty Betty.

P(at least one) =

Find the probability that at most one household is tuned toPretty Betty.

P(at most one) =