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Specific Motors of Detroit has developed a new Automobile known as the M Car

Math

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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