Author Question: A certain rare form of cancer occurs in 37 children in a million, so its probability is 0.000037. In ... (Read 42 times)

drink · **on:** Jul 25, 2018

A certain rare form of cancer occurs in 37 children in a million, so its probability is 0.000037. In the
city of Normalville there are 74,090,000 children.

A Poisson distribution will be used to
approximate the probability that the number of cases of the disease in Normalville children is
more than 2. Find the mean of the appropriate Poisson distribution (the mean number of cases in
groups of 74,090,000 children).
A) 27,400 B) 2740 C) 274 D) 0.000037

Question 2

On a multiple choice test with 17 questions, each question has four possible answers, one of which
is correct. For students who guess at all answers, find the mean for the number of correct answers.

A) 8.5 B) 12.8 C) 4.3 D) 5.7