The following probability model shows the distribution of murders by type of weapon for murder cases in

Question:

The following probability model shows the of murders by type of weapon for murder cases in 2013.
Weapon Probability
Handgun.................................0.472
Rifle........................................0.023
Shotgun..................................0.025
Unknown firearm......................0.170
Knives....................................0.122
Hands, fists, etc........................0.056
Other......................................0.132
(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 (a firearm)? Interpret this probability.
(d) What is the probability that a randomly selected murder resulted from a weapon other than a firearm? Interpret this probability.
(e) Are murders with a shotgun unusual?
Distribution
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