Question

It is a common belief that SUVs are safer than cars. In a collision, does an SUV sustain less damage (cost of repair) than a car?

SUV into Car |
SUV Damage ($) |
Car Damage ($) |

Honda CR-V into Honda Civic | $1,721 | $1,274 |

Toyota RAV4 into Toyota Corolla | $1,434 | $2,327 |

Hyundai Tuscon into Kia Forte | $850 | $3,223 |

Volkswagon Tiguan into Volkswagon Golf | $2,329 | $2,058 |

Jeep Patriot into Dodge Caliber | $1,415 | $3,095 |

Ford Escape into Ford Focus | $1,470 | $3,386 |

Nissan Rogue into Nissan Sentra |
$2,884 | $4,560 |

Test the claim above at the α=0.1 level of significance.
*Note*:*A normal probability plot of
difference in car damages between SUVs and other cars indicates the
population could be normal and a boxplot indicated no
outliers.*

1) what is the test statistic? *Round to 3 decimal
places.*

= ????

2) what is the p -value? *Round to 4 decimal
places.*

p= ????

Answer #1

since same brand cars have been used, this is a dependent test:

from above:

**1)**

**test statistic = -2.685**

**2)**

**p -value =0.0181**

Based on sales over a six-month period, the five top-selling
compact cars are Chevy Cruze, Ford Focus, Hyundai Elantra, Honda
Civic, and Toyota Corolla.† Based on total sales, the market shares
for these five compact cars were Chevy Cruze 24%, Ford Focus 21%,
Hyundai Elantra 20%, Honda Civic 18%, and Toyota Corolla 17%.
Suppose a sample of 400 compact car sales in one city showed the
following number of vehicles sold.
Chevy Cruze
109
Ford Focus
92
Hyundai Elantra
65...

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, a variety of classes of hybrid and
all-gas model cars and sport utility vehicles (SUVs) were tested.
The data showing the miles-per-gallon rating study obtained for two
hybrid small cars, two hybrid midsize cars, two hybrid small SUVs,
two hybrid midsize SUVs, and eight similarly equipped conventional
models are contained in the Excel Online file below. Construct a
spreadsheet to answer the following questions.
a. At...

Based on sales over a six-month period, the five top-selling
compact cars are Chevy Cruze, Ford Focus, Hyundai Elantra, Honda
Civic, and Toyota Corolla.† Based on total sales, the market shares
for these five compact cars were Chevy Cruze 24%, Ford Focus 21%,
Hyundai Elantra 20%, Honda Civic 18%, and Toyota Corolla 17%.
Suppose a sample of 400 compact car sales in one city showed the
following number of vehicles sold.
Chevy Cruze
108
Ford Focus
92
Hyundai Elantra
65...

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, Consumer Reports tested a
variety of classes of hybrid and all-gas model cars and sport
utility vehicles (SUVs). The following data show the
miles-per-gallon rating Consumer Reports obtained for two
hybrid small cars, two hybrid midsize cars, two hybrid small SUVs,
and two hybrid midsize SUVs; also shown are the miles per gallon
obtained for eight similarly equipped conventional models.
Make/Model
Class
Type
MPG
Honda Civic...

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, Consumer Reports tested a
variety of classes of hybrid and all-gas model cars and sport
utility vehicles (SUVs) were tested. The following data show the
miles-per-gallon rating Consumer Reports obtained for two
hybrid small cars, two hybrid midsize cars, two hybrid small SUVs,
and two hybrid midsize SUVs; also shown are the miles per gallon
obtained for eight similarly equipped conventional models.
Make/Model
Class
Type
MPG...

You may need to use the appropriate technology to answer this
question.
As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, Consumer Reports tested a
variety of classes of hybrid and all-gas model cars and sport
utility vehicles (SUVs). The following data show the
miles-per-gallon rating Consumer Reports obtained for two
hybrid small cars, two hybrid midsize cars, two hybrid small SUVs,
and two hybrid midsize SUVs; also shown are the miles per gallon
obtained...

You may need to use the appropriate technology to answer this
question.
As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, Consumer Reports tested a
variety of classes of hybrid and all-gas model cars and sport
utility vehicles (SUVs). The following data show the
miles-per-gallon rating Consumer Reports obtained for two
hybrid small cars, two hybrid midsize cars, two hybrid small SUVs,
and two hybrid midsize SUVs; also shown are the miles per gallon
obtained...

Each year a market research company surveys new car owners 90
days after they purchase their cars. This data is used to rate auto
brands (such as Toyota and Ford) on quality and customer
satisfaction. Suppose the following were the quality rating and
satisfaction scores for all 33 brands sold in the United
States.
Brand
Quality Rating
Satisfaction
Rating
Acura
86
822
Audi
111
832
BMW
113
845
Buick
114
802
Cadillac
111
818
Chevrolet
111
789
Chrysler
122
748...

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