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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.

   F test to compare two variances

data:  ldl.ha and ldl.cont

F = 7.683, num df = 9, denom df = 15,
   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

          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?

Answer & Explanation Solved by verified expert
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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