Question
In: Statistics and Probability
It is known that 40% of American Idol winners become famous. A sample of 50 American...
It is known that 40% of American Idol winners become famous. A sample of 50 American Idol winners are randomly selected.
(a) [1] What is the probability that exactly 25 of them become famous?
(b) [1] Find the probability that at least 20 of them become famous.
(c) [2] What is the probability that between 17 and 27 (including both 17 and 27) of them become famous.
(d) [2] Find the expected number of American Idol winners become famous in this sample and its standard deviation.
Solutions
Expert Solution
a)
b)
c)
d)
expected number is 20
standard deviation is 3.464
please like ??
orchestra answered 1 year agoRelated Solutions
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