A certain TV show recently had a share of 80, meaning that among the TV sets in use, 80% were tuned to that show. Assume that an advertiser wants to verify that 80% share value by conducting its own survey, and a pilot survey begins with 12 households having TV sets in use at the time of the TV show broadcast. Complete parts (a) through (d) below.
a) Find the probability that all households are tuned to the TV show
b) Find the probability that exactly 12 households are tuned to the TV show
c) Find the probability that at least 12 households are tuned to the TV show
d) If at least 12 households are tuned to the TV show, does it appear that the 80% share value is wrong? Why or why not?
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