Question: Using the EXERCISE data set, using a new variable PUL GAIN which is the difference in the post-exercise ( PULSE 2) and pre-exercise pulse (

Using the EXERCISE data set, using a new variable PUL GAIN which is the difference in the post-exercise ( PULSE 2) and pre-exercise pulse ( PULSE 1) rates and compare the variability of smokers and non smokers on this variable. Set the 90% CI for the ratio of the variances.

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