Using the data from the previous question on LDL cholesterol, you decide to test if the...

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Statistics

Using the data from the previous question on LDL cholesterol,you decide to test if the variance in LDL cholesterol of patientsadmitted to the hospital with a heart attack is the same as that ofthose who have not (the control). You use the R function var.testand obtain the following output.
Â Â F test to compare two variances
data:Â Â ldl.ha and ldl.cont
F = 7.683, num df = 9, denom df = 15,
Â Â p-value = 0.0006501
alternative hypothesis: true ratio of
variances is not equal to 1
95 percent confidence interval:
2.460444 28.960945
sample estimates:
ratio of variances
Â Â Â Â Â Â Â Â Â Â 7.683258

What is your decision and conclusion (with respect to variation inLDL cholesterol levels) from the above R test output assuming analpha level of 0.05? AND how does this help us beyond this test ofthe variance?

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4.3 Ratings (796 Votes)

We want to test that the he variance in LDL cholesterol of patients admitted to the hospital with a heart attack is the same as that of those who have not the control Ho The variance in LDL See Answer

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