Regression and correlation coefficient

[delicate mortar]

can anyone pls help me with the 2nd and the 3rd question

[tiny garnet]

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[valid tangle]

what are you stuck with exactly, this is well known procedure

show us your work to speed things up

[crisp moat]

@delicate mortar

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[rough bone]

Do you know what the equation looks like?

It's a simple slope

Where some coefficients are derived from Pearson correlation