Consider this population data set: 4, 6, 7, 11, 12, 18, 26, 23, 14, 31, 22, 12. a random sample of four is drawn from this set: 11, 31, 22, and 12. what is the point estimate of the mean for the population?

I know the answer is 3.5, if you want me to explain how, just comment.

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

let f (x ) is a function and c be a positive real number,   the graph of the function g (x ) = f (cx ) is represented as follows.

when, c > 1,   the function compresses it in the x - direction.

when, 0 < c < 1, the function stretches it.

the function is g ( x ) = (9x )2.

the heighest power of x in g ( x ) = (9x )2 is 2, so the parent function is square function.

the equation of parent function is f ( x ) = x 2 .

the function is g ( x ) = (9x )2 and the parent function is f ( x ) = x 2 .

so, the functions f and g have the following relationship.

g ( x ) = f ( 9x ).

compare the function g ( x ) = f ( 9x ) with g (x ) = f (cx ).

c = 9 ( > 1 ).

so, the function g (x ) = (9x )2 compresses it in the x - direction.

step-by-step explanation: