The following probability model shows the distribution of murders by type of weapon for murder cases in
Question:
Weapon ...... Probability
Handgun ....... 0.473
Rifle ....... 0.026
Shotgun ....... 0.031
Unknown firearm .... 0.141
Knives ....... 0.134
Hands, fists, etc. ... 0.059
Other ....... 0.136
(a) Verify that this is a probability model.
(b) What is the probability that a randomly selected murder resulted from a rifle or shotgun? Interpret this probability.
(c) What is the probability that a randomly selected murder resulted from a handgun, rifle, or shotgun? Interpret this probability.
(d) What is the probability that a randomly selected murder resulted from a weapon other than a gun? Interpret this probability.
(e) Are murders with a shotgun unusual?
Distribution
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a Rule 1 is satisfied since all of the probabilities in the model are between 0 and 1 Rule 2 is ...View the full answer
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