The following table shows the distribution of murders by type of weapon for murder cases in a particular country over the past 12 years. Complete parts (a) through (e). Probability 0.474 Weapon Handgun Rifle 0.026 0.034 Shotgun Unknown firearm 0.144 0.132 0.055 Knives Hands, fists, etc. Other 0.135 (a) Is the given table a probability model? Why or why not? O A. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1. O B. No; the sum of the probabilities of all outcomes does not equal 1. OC. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1, and the sum of the probabilities of all outcomes does not equal 1. D. Yes; the rules required for a probability model are both met. (b) What is the probability that a randomly selected murder resulted from a rifle or shotgun? P(rifle or shotgun) = 0.060 (Type a decimal rounded to three decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. O A. If 1000 murders were randomly selected, exactly of them would have resulted from a rifle or shotgun. O B. If 1000 murders were randomly selected, we would expect about of them to have resulted from a rifle or shotgun.
The following table shows the distribution of murders by type of weapon for murder cases in a particular country over the past 12 years. Complete parts (a) through (e). Probability 0.474 Weapon Handgun Rifle 0.026 0.034 Shotgun Unknown firearm 0.144 0.132 0.055 Knives Hands, fists, etc. Other 0.135 (a) Is the given table a probability model? Why or why not? O A. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1. O B. No; the sum of the probabilities of all outcomes does not equal 1. OC. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1, and the sum of the probabilities of all outcomes does not equal 1. D. Yes; the rules required for a probability model are both met. (b) What is the probability that a randomly selected murder resulted from a rifle or shotgun? P(rifle or shotgun) = 0.060 (Type a decimal rounded to three decimal places as needed.) Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice. O A. If 1000 murders were randomly selected, exactly of them would have resulted from a rifle or shotgun. O B. If 1000 murders were randomly selected, we would expect about of them to have resulted from a rifle or shotgun.
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Please answer A or B and fill in the blank. Thank you.
Transcribed Image Text:The following table shows the distribution of murders by type of weapon for murder cases in a
particular country over the past 12 years. Complete parts (a) through (e).
Weapon
Probability
Handgun
0.474
Rifle
0.026
Shotgun
0.034
Unknown firearm
0.144
Knives
0.132
Hands, fists, etc.
0.055
Other
0.135
(a) Is the given table a probability model? Why or why not?
A. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1.
B. No; the sum of the probabilities of all outcomes does not equal 1.
C. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1, and the sum of the probabilities of all outcomes does not equal 1.
D. Yes; the rules required for a probability model are both met.
(b) What is the probability that a randomly selected murder resulted from a rifle or shotgun?
P(rifle or shotgun) = 0.060 (Type a decimal rounded to three decimal places as needed.)
%3D
Interpret this probability. Select the correct choice below and fill in the answer box to complete your choice.
A. If 1000 murders were randomly selected, exactly
of them would have resulted from a rifle or shotgun.
B. If 1000 murders were randomly selected, we would expect about
of them to have resulted from a rifle or shotgun.
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