SOLUTION: i NEED HELP PLEASE Must state the five steps Hypotheses critical value compute test value state whether you reject the null or not reject the null hypotheses Write a summ

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Question 466188: i NEED HELP PLEASE
Must state the five steps
Hypotheses
critical value
compute test value
state whether you reject the null or not reject the null hypotheses
Write a summary conclusion
Noise levels in Hospitals
It was found that the standard deviation of the sound levels from 20 area designated as casualty doors was 4.1 dba and the standard devaiton of 24 areas desinated as operating theaters was 7.5 dba. At X=.05 can you substanitate the claim that there is a difference in the standard deviations?
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
It was found that the standard deviation of the sound levels from 20 area designated as casualty doors was 4.1 dba and the standard deviation of 24 areas designated as operating theaters was 7.5 dba.
At X=.05 can you substanitate the claim that there is a difference in the standard deviations?
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Ho: var1 - var2 = 0
Ha: var1 - var is not 0 (claim)
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I ran an F-test on the data and got the following:
test statistic: F = 0.2988
p-value = -.0097
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Conclusion: Since the p-value is less than 5%, reject Ho.
The test results support the claim.
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Cheers,
Stan H.