Ŷ<span> “y-hat” = predicted average y value for a given x, found by using the regression equation.
</span>p̂ “p-hat” -----> <span>proportion
</span>I can't type y-bar but its a straight line on the top of letter y.
Answer:
the expression representing the area of the patio has four terms
the expression representing the area of the patio is a polynomial
the expression representing the area of the patio has a constant term
the expression representing the area of the patio is cubic
Step-by-step explanation:

where

is the mean. Since


you have variance

and so the standard deiviation is