STAT 200 Week 3
Homework Problems
GRADED A
, STAT 200 Week 3 Homework Problems
4.1.4
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
m
P(Safety) = 84/300=0.28
er as
co
P(Reliability) = 62/300=0.27
eH w
P(Cost) = 46/300=0.15
o.
P(Performance) = 34/300=0.11
rs e
ou urc
P(Comfort) = 47/300=0.16
P(Looks) = 27/300=0.09
o
4.2.2
aC s
vi y re
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.
Table #4.2.2: Number of Defective Lenses
ed d
Defect type Number of defects
ar stu
Scratch 5865
Right shaped – small 4613
is
Flaked 1992
Th
Wrong axis 1838
Chamfer wrong 1596
sh
Crazing, cracks 1546
Wrong shape 1485
Wrong PD 1398
Spots and bubbles 1371
This study source was downloaded by 100000833420338 from CourseHero.com on 10-31-2021 01:54:52 GMT -05:00
https://www.coursehero.com/file/34854903/STAT-200-Week-3-Homework-Problemsdocx/
Homework Problems
GRADED A
, STAT 200 Week 3 Homework Problems
4.1.4
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
m
P(Safety) = 84/300=0.28
er as
co
P(Reliability) = 62/300=0.27
eH w
P(Cost) = 46/300=0.15
o.
P(Performance) = 34/300=0.11
rs e
ou urc
P(Comfort) = 47/300=0.16
P(Looks) = 27/300=0.09
o
4.2.2
aC s
vi y re
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.
Table #4.2.2: Number of Defective Lenses
ed d
Defect type Number of defects
ar stu
Scratch 5865
Right shaped – small 4613
is
Flaked 1992
Th
Wrong axis 1838
Chamfer wrong 1596
sh
Crazing, cracks 1546
Wrong shape 1485
Wrong PD 1398
Spots and bubbles 1371
This study source was downloaded by 100000833420338 from CourseHero.com on 10-31-2021 01:54:52 GMT -05:00
https://www.coursehero.com/file/34854903/STAT-200-Week-3-Homework-Problemsdocx/
