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I am using the phbirths data in the faraway package in R. I want to: 1) create a...

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Basic Math

Iam using the phbirths data in the faraway package in R.

I want to:
1) create a plot of the birth weight vs the gestational ageand I want to colour code the points based on the mothers smokingstatus to determine whether or not smoking affects thebabies.
2) fit a simple model (one regression line) along with boththe main effects (parallel lines) and interaction (non parallellines) ANCOVA model to the data and find out which model ispreferred.

what coding would I use for both of these questions? pleasehelp, will thumbs up! ?

Thanks.

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