This exercise is based on the following table, which shows crashworthiness ratin

Question

This exercise is based on the following table, which shows crashworthiness ratings for several categories of motor vehicles. Take X as the crash-test rating of a small car, Y as the crash-test rating for a small SUV, and so on, as shown in the table.

Compute the relative frequency distribution for X. (Round your answers to four decimal places.)

Number
Tested Overall Frontal Crash Test Rating 3
(Good) 2
(Acceptable) 1
(Marginal) 0
(Poor) Small Cars X 16 1 11 2 2 Small SUVs Y 10 2 3 2 3 Medium SUVs Z 15 3 5 3 4 Passenger Vans U 13 3 0 3 7 Midsize Cars V 15 3 5 0 7 Large Cars W 19 9 5 3 2

Explanation / Answer

X 3 2 1 0 Frequency 1 11 2 2 P(X = x) 1/16 = 0.0625 11/16 = 0.6875 2/16 = 0.125 2/16 = 0.125

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