The television show Green’s Anatomy has been successful for many years. That show recently had a share of 21, meaning that among the TV sets in use, 21% were tuned to Green’s Anatomy. Assume that an advertiser wants to verify that 21% share value by conducting its own survey, and a pilot survey begins with 14 households have TV sets in use at the time of a Green’s Anatomy broadcast.
a. Find the probability that none of the households are tuned to
Green’s Anatomy.
P(none) =
B. Find the probability that at least one
household is tuned to Green’s Anatomy.
P(at least one) =
C. Find the probability that at most one household is tuned to
Green’s Anatomy.
P(at most one) =
D. If at most one household is tuned to Green’s Anatomy, does it appear that the 21% share value is wrong? (Hint: Is the occurrence of at most one household tuned to Green’s Anatomy unusual?)
TOPIC:Use of the Binomial distribution.
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