Which of the following are true assumptions underlying linear regression? (1) for each value of x, there is a group of y values that is normally distributed. (2) the means of these normal distributions of y values all lie on the regression line. (3) the standard deviations of these normal distributions are equal?
a)only (1) and (2)
b)only (1) and (3)
c)only (2) and (3)
d)all of them

idk man good luck man

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.