I am shopping for a new mid-size SUV and would like to get one with excellent miles per gallon (MPG). I heard that Japanese cars tend to be more fuel efficient than American cars, so I collected MPG data on a random sample of 10 Japanese mid-size SUV models (listed in the table below) to be compared to the American mid-size SUV statistics. I would like to see if there is a significant difference, in either direction, between Japanese mid-size SUVs and American mid-size SUVs. The US Environmental Protection Agency reported that the average MPG for American mid-size SUVs in 2020 is μ = 28. I set the significance level at a = .10 for a two-tailed hypothesis test. Hint: Because we know the population mean for the American cars but not the standard deviation, we cannot conduct a Z test but should perform a one-sample t-test instead. Japanese car model 1 2 3 4 5 6 7 8 9 10 MPG 29 32 30 28 27 34 30 35 32 36

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Using the information given, provide the t statistic for the sample, the degree of freedom, and then determine the critical t values based on the type of test and the preset alpha level.
I am shopping for a new mid-size SUV and would like to get one with excellent miles per gallon (MPG). I
heard that Japanese cars tend to be more fuel efficient than American cars, so I collected MPG data on a
random sample of 10 Japanese mid-size SUV models (listed in the table below) to be compared to the
American mid-size SUV statistics. I would like to see if there is a significant difference, in either direction,
between Japanese mid-size SUVs and American mid-size SUVs. The US Environmental Protection Agency
reported that the average MPG for American mid-size SUVs in 2020 is = 28. I set the significance level
at a = .10 for a two-tailed hypothesis test.
Hint: Because we know the population mean for the American cars but not the standard deviation, we
cannot conduct a Z test but should perform a one-sample t-test instead.
Japanese car model
MPG
1
29
2
32
3
30
4
28
5
27
6
34
7
30
8
35
32
36
9
10
Transcribed Image Text:I am shopping for a new mid-size SUV and would like to get one with excellent miles per gallon (MPG). I heard that Japanese cars tend to be more fuel efficient than American cars, so I collected MPG data on a random sample of 10 Japanese mid-size SUV models (listed in the table below) to be compared to the American mid-size SUV statistics. I would like to see if there is a significant difference, in either direction, between Japanese mid-size SUVs and American mid-size SUVs. The US Environmental Protection Agency reported that the average MPG for American mid-size SUVs in 2020 is = 28. I set the significance level at a = .10 for a two-tailed hypothesis test. Hint: Because we know the population mean for the American cars but not the standard deviation, we cannot conduct a Z test but should perform a one-sample t-test instead. Japanese car model MPG 1 29 2 32 3 30 4 28 5 27 6 34 7 30 8 35 32 36 9 10
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