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U.S. Police Chiefs and the Death Penalty The chance that a
Chapter 5, Problem 19RE(choose chapter or problem)
Problem 19RE
U.S. Police Chiefs and the Death Penalty The chance that a U.S. police chief believes the death penalty “significantly reduces the number of homicides” is 1 in 4. If a random sample of 8 police chiefs is selected, find the probability that at most 3 believe that the death penalty significantly reduces the number of homicides. (5−3)
Source: Harper’s Index.
Questions & Answers
QUESTION:
Problem 19RE
U.S. Police Chiefs and the Death Penalty The chance that a U.S. police chief believes the death penalty “significantly reduces the number of homicides” is 1 in 4. If a random sample of 8 police chiefs is selected, find the probability that at most 3 believe that the death penalty significantly reduces the number of homicides. (5−3)
Source: Harper’s Index.
ANSWER:
Solution:
Step 1 of 2:
From the given problem, we have
n = 8,
= 0.25
q = 1 - p
= 1- 0.25
= 0.75
Here, we have to find the probability that at most 3 believe.