Identify the research question that involves an inference about a difference between two population means. A. Is the average amount of financial aid received in a year by community college students greater than $2,600? B. Do female community college students prefer to work on group projects more than male students? C. Do community college students prefer computer-based homework or pencil-and-paper homework in math classes? D. Do community college students receive less in financial aid than students attending public universities?

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation: