A population of 100 rats is tested for 4 genetic mutations after exposure to some chemicals: mutation
Question:
A population of 100 rats is tested for 4 genetic mutations after exposure to some chemicals:
mutation A, mutation B, mutation C, and mutation D. 43 rats tested positive for mutation A.
37 rats tested positive for mutation B. 37 rats tested positive for mutation C. 35 rats tested
positive for mutation D. One rat tested positive for all four mutations. 5 rats tested positive
for mutations A, B, and C. 4 rats tested positive for mutations A, B, and D. 6 rats tested
positive for mutations A, C, and D. 3 rats tested positive for mutations B, C, and D. 64 rats
tested positive for mutations A or B. 61 rats tested positive for mutations A or C. 59 rats tested
positive for mutations B or D. 58 tested positive for mutations C or D. 9 rats did not show any
evidence of genetic mutation.
(a) What is the probability that if 5 rats are selected at random, 3 will have exactly 2 genetic
mutations?
(b) What is the probability that if 4 rats are selected at random, no more than 2 will have
exactly 1 mutation?
Entrepreneurial Finance
ISBN: 978-1305968356
6th edition
Authors: J. Chris Leach, Ronald W. Melicher