Three different transmission types are installed on different cars, all having 6
ID: 3320571 • Letter: T
Question
Three different transmission types are installed on different cars, all having 6 cylinder engines and an engine size of 3 liters. The fuel consumption (miles per gallon) is found for highway conditions with the results given below in the table. The column titles of A, M, L represent automatic, manual and lockup torque converter, respectively.
A
M
L
23
27
24
23
29
26
20
25
24
21
23
24
At the 0.05 significance level, test the claim that the mean fuel consumption values are the same for all three transmission types. (Note: you can copy and paste the data into your Excel worksheet)
Based upon your statistical results, you have determined the correct decision is:
the test statistic is more than the p value, therefore do not reject the null.
the test statistic is less than the critical value, therefore you would reject the null
the p value is less than the designated alpha, therefore you would reject the null
the pvalue is less than the critical value, therefore, reject the null.
A
M
L
23
27
24
23
29
26
20
25
24
21
23
24
Explanation / Answer
The statistical software output for this problem is:
Analysis of Variance results:
Data stored in separate columns.
Column statistics
ANOVA table
Since p - value is less than 0.05, we reject the null hypothesis.
Hence,
Option C is correct.
Column n Mean Std. Dev. Std. Error A 4 21.75 1.5 0.75 M 5 25.6 2.4083189 1.077033 L 3 24.666667 1.1547005 0.66666667Related Questions
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