A poll reported that 66% of adults were satisfied with the job the major airlines were doing. Suppose 15 adults are
selected at random and the number who are satisfied
is recorded. Complete parts (a) through (e) below.
(b) Find and interpret the probability that exactly 8 of them are satisfied with the airlines.
The probability that exactly 8 adults are satisfied with the airlines is
(Round to four decimal places as needed.)
Interpret the probability. Select the correct choice below and fill in the answer box within your choice.
(Round to the nearest integer as needed.)
OA. In 100 randomly sampled surveys of 15 adults, less than 8 of the 15 adults would be expected to be satisfied
with the airlines in about of those surveys.
OB. In 100 randomly sampled surveys of 15 adults, exactly 8 out of the 15 adults would be expected to be satisfied
with the airlines in about of those surveys.
OC. In 100 randomly sampled surveys of 15 adults, 8 or more of the 15 adults would be expected to be satisfied
with the airlines in about of those surveys.
(c) Find and interpret the probability that at least 12 of them are satisfied with the airlines.
The probability that at least 12 adults are satisfied with the airlines is
(Round to four decimal places as needed.)
Interpret the probability. Select the correct choice below and fill in the answer box within your choice.
(Round to the nearest integer as needed.)
71951