Given are the data for two variables x 6 11 15 18 20
y 6 8 12 20 30

Required:
Develop an estimated regression equation for these data by computing and (to decimals).

This does not make sense

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.