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Homework answers / question archive / Specific Motors of Detroit has developed a new Automobile known as the M Car

Specific Motors of Detroit has developed a new Automobile known as the M Car. 24 M cars and 28 J cars (from Japan) were road tested to compare miles-per-gallon (mpg) performance. The sample statistics are shown below: Sample 1(M-Cars) Sample 2 (J Cars)

Sample 1(M-Cars) |
Sample 2 (J Cars) |

n1 = 24 |
n2= 28 |

X1 = 29.8 | X2 = 27.3 |

S1 = 2.56 S2 = 1.81

Calculate a 90% confidence interval for the difference between mpg performance of the 2 car models.

A.) The manager claims that there is no difference in the mpg performance of M and J cars.

b.) Calculate the test statistic.

c.) Calculate the p-value.

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