STAT 200 Week 3 Homework Problems.

A project conducted by the Australian Federal Office of Road Safety asked people many questions about
their cars. One question was the reason that a person chooses a given car, and that data is in table
#4.1.4 ("Car preferences," 2013).
Table #4.1.4: Reason for Choosing a Car
Safety Reliability Cost Performance Comfort Looks
84 62 46 34 47 27
Find the probability a person chooses a car for each of the given reasons.
Total = 84+62+46+34+47+27=300
P(Safety) = 84/300=0.28
P(Reliability) = 62/300=0.27
P(Cost) = 46/300=0.15
P(Performance) = 34/300=0.11
P(Comfort) = 47/300=0.16
P(Looks) = 27/300=0.09
4.2.2
Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective
lenses they made in a time period. Table #4.2.2 gives the defect and the number of defects.