Question

In: Statistics and Probability

What are the chances that a person who is murdered actually knew the murderer? The answer...

What are the chances that a person who is murdered actually knew the murderer? The answer to this question explains why a lot of police detective work begins with relatives and friends of the victim! About 68% of people who are murdered actually knew the person who committed the murder. Suppose that a detective file in New Orleans has 58 current unsolved murders. Find the following probabilities. (Round your answers to four decimal places.)

(a) at least 35 of the victims knew their murderers


(b) at most 48 of the victims knew their murderers


(c) fewer than 30 victims did not know their murderers


(d) more than 20 victims did not know their murderers

Solutions

Expert Solution

(a)

(b)

(c)

Fewer than 30 victims did not know their murderers means at least 29 victims know their murderers.

(d)

More than 20 victims did not know their murderers means at most 37 victims know their murderers.

orchestra answered 2 years ago
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