Test whether there is a significant difference in the average miles per gallon performance (mpg) between the automatic transmission cars and the manual transmission cars. Use a 0.5 level of significance.
Test whether there is a significant difference in the average miles per gallon performance (mpg) between the automatic transmission cars and the manual transmission cars. Use a 0.5 level of significance.
Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter11: Systems Of Equations
Section11.CT: Test
Problem 24CT
Related questions
Question
Test whether there is a significant difference in the average miles per gallon performance (mpg) between the automatic transmission cars and the manual transmission cars. Use a 0.5 level of significance.
Transcribed Image Text:Car
Mazda RX4
Mazda RX4 Wag
Datsun 710
Hornet 4 Drive
Hornet Sportabout
Chrysler Valiant
Duster 360
Merc 240D
Merc 230
Merc 280
Merc 280C
Merc 450SE
Merc 450SL
Merc 450SLC
Cadillac Fleetwood
Lincoln Continental
Chrysler Imperial
Fiat 128
Honda Civic
Toyota Corolla
Toyota Corona
Dodge Challenger
AMC Javelin
Camaro Z28
Pontiac Firebird
Fiat X1-9
Porsche 914-2
Lotus Europa
Ford Pantera L
Ferrari Dino
Maserati Bora
Volvo 142E
mpg
21
21
22.8
21.4
18.7
18.1
14.3
24.4
22.8
19.2
17.8
16.4
17.3
15.2
10.4
10.4
14.7
32.4
30.4
33.9
21.5
15.5
15.2
13.3
19.2
27.3
26
30.4
15.8
19.7
15
21.4
cyl
6
6
disp
4
6
8
6
8
4
4
6
6
8
8
8
8
8
8
4
4
4
4
8
8
8
8
4
4
4
8
6
8
4
160
160
108
258
360
225
360
146.7
140.8
167.6
167.6
275.8
275.8
275.8
472
460
440
78.7
75.7
71.1
120.1
318
304
350
400
79
120.3
95.1
351
145
301
121
hp
110
110
93
110
175
105
245
62
95
123
123
180
180
180
205
215
230
66
52
65
97
150
150
245
175
66
91
113
264
175
335
109
drat
3.9
3.9
3.85
3.08
3.15
2.76
3.21
3.69
3.92
3.92
3.92
3.07
3.07
3.07
2.93
3
3.23
4.08
4.93
4.22
3.7
2.76
3.15
3.73
3.08
4.08
4.43
3.77
4.22
3.62
3.54
4.11
wt
2.62
2.875
2.32
3.215
3.44
3.46
3.57
3.19
3.15
3.44
3.44
4.07
3.73
3.78
5.25
5.424
5.345
2.2
1.615
1.835
2.465
3.52
3.435
3.84
3.845
1.935
2.14
1.513
3.17
2.77
3.57
2.78
qsec
16.46
17.02
18.61
19.44
17.02
20.22
15.84
20
22.9
18.3
18.9
17.4
17.6
18
17.98
17.82
17.42
19.47
18.52
19.9
20.01
16.87
17.3
15.41
17.05
18.9
16.7
16.9
14.5
15.5
14.6
18.6
VS
0
0
1
1
0
1
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
0
1
0
0
0
1
am
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
1
1
1
1
1
1
1
gear
4
4
4
3
3
3
3
4
4
4
4
3
3
3
3
3
3
4
4
4
3
3
3
3
3
4
5
5
5
5
5
4
carb
maker
4 Japan
4 Japan
1 Japan
1 USA
2 USA
1 USA
4 USA
2 German
2 German
4 German
4 German
3 German
3 German
3 German
4 USA
4 USA
4 USA
1 Italy
2 Japan
1 Japan
1 Japan
2 USA
2 USA
4 USA
2 USA
1 Italy
2 German
2 UK
4 USA
6 Italy
8 Italy
2 Sweden
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