Question

As part of a study designed to compare hybrid and similarly equipped conventional vehicles, a group tested a variety of classes of hybrid and all-gas model cars and sport utility vehicles (SUVs). Suppose the following data show the miles-per-gallon rating 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.

Class | Type | MPG |
---|---|---|

Small Car | Hybrid | 37 |

Small Car | Conventional | 28 |

Small Car | Hybrid | 44 |

Small Car | Conventional | 32 |

Midsize Car | Hybrid | 29 |

Midsize Car | Conventional | 21 |

Midsize Car | Hybrid | 34 |

Midsize Car | Conventional | 23 |

Small SUV | Hybrid | 25 |

Small SUV | Conventional | 23 |

Small SUV | Hybrid | 26 |

Small SUV | Conventional | 24 |

Midsize SUV | Hybrid | 23 |

Midsize SUV | Conventional | 19 |

Midsize SUV | Hybrid | 24 |

Midsize SUV | Conventional | 18 |

Find the value of the test statistic for interaction between class and type. (Round your answer to two decimal places.)

Find the *p*-value for interaction between class and
type. (Round your answer to three decimal places.)

*p*-value =

Answer #1

Applying two way ANOVA on above data:

Source of Variation |
SS |
df |
MS |
F |
P-value |

class | 441.25 | 3 | 147.08 | 24.01 | 0.000 |

type | 182.25 | 1 | 182.25 | 29.76 | 0.001 |

Interaction | 47.25 | 3 | 15.75 | 2.57 | 0.127 |

Within | 49.00 | 8 | 6.13 | ||

Total | 719.75 | 15 |

value of the test statistic for class =24.01 |

p-value =0 |

Because the p-value ≤ α = 0.05, class is significant. |

value of the test statistic for type =29.76 |

p-value =0.001 |

Because the p-value ≤ α = 0.05, type is significant. |

)value of the test statistic for interaction =2.57 |

p-value = 0.127 |

Because the p-value > α = 0.05, interaction between
class and type is not significant. |

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, a group tested a variety of classes
of hybrid and all-gas model cars and sport utility vehicles (SUVs).
Suppose the following data show the miles-per-gallon rating
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.
Class
Type
MPG
Small Car
Hybrid
37...

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, a group tested a variety of classes
of hybrid and all-gas model cars and sport utility vehicles (SUVs).
Suppose the following data show the miles-per-gallon rating
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.
Class
Type
MPG
Small Car
Hybrid
38...

As part of a study designed to compare hybrid and similarly
equipped conventional vehicles, Consumer Reports tested a
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miles-per-gallon rating Consumer Reports obtained for two
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a. At...

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
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The Department of Energy provides fuel economy ratings for all
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21)____________ A washing machine
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