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Solution: assume all variables are binomial. (Note: If
Chapter 5, Problem 11E(choose chapter or problem)
Problem 11E
assume all variables are binomial. (Note: If values are not found in Table B of Appendix C, use the binomial formula.)
Survey on Concern for Criminals In a survey, 3 of 4 students said the courts show “too much concern” for criminals. Find the probability that at most 3 out of 7 randomly selected students will agree with this statement.
Source: Harper’s Index
Questions & Answers
QUESTION:
Problem 11E
assume all variables are binomial. (Note: If values are not found in Table B of Appendix C, use the binomial formula.)
Survey on Concern for Criminals In a survey, 3 of 4 students said the courts show “too much concern” for criminals. Find the probability that at most 3 out of 7 randomly selected students will agree with this statement.
Source: Harper’s Index
ANSWER:
Solution:
Step 1 of 2:
From the given problem, we have
n = 7, p =
= 0.75
We have to assume all variables are binomial.
Then, the pmf of the binomial distribution is