77.A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would...

Question

77.A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since they commute the farthest to work. Suppose that the group randomly surveyed 24 individuals and asked them their daily one-way commuting mileage. The results are as follows.     Determine whether or not the variance in mileage driven is statistically the same among the working class and professional (middle income) groups. Use a 5% significance level.I need it answered in steps, with the formula used displayed. If produced on a calculator, pictures of the screen are needed.

David · Accepted Answer

1
Significance level = 5%  
Data from the random surveyed of 24 individuals are shown below:
Hypothesis testing  
Null hypotheses H0 –There are no statistically significant difference between the three mean 
commuting mileages.  
Alternative hypotheses H1 – There are a statistically significant difference between the three 
mean commuting mileages. 
To test the hypotheses –                   is used.  
Step 1:

77. A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since they commute the farthest to work. Suppose that the group...

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