6. the television show pretty betty has been successful for many years. that show recently had a share of 23, meaning that among the tv sets in use, 23% were tuned to pretty betty. assume that an advertiser wants to verify that 23% share value by conducting its own survey, and a pilot survey begins with 11 households have tv sets in use at the time of a pretty betty broadcast. find the probability that at least one of the households is tuned to pretty betty. p(at least one)=