At a local college, 65 female students were randomly selected and it was found that their mean monthly income was $628 with a standard deviation of $121.50. seventy-five male students were also randomly selected and their mean monthly income was found to be $670 with a standard deviation of $168.70. test the claim that male students have a higher monthly income than female students. use α = 0.01. group of answer choices
a. reject h0
b. fail to reject h0
c. not sufficient information to decide

b

2

−

b

b

3

+

7

b

2

+

14

b

+

6

%

−

3

b

3

+

7

b

2

+

14

b

+

6

%

step-by-step explanation:

1. when "a" is a root of a polynomial, (x -a) is a factor of it. for the three roots given, the factors of the desired polynomial are (x +2)(x -1/2)(x -3).

in order to make the leading coefficient be negative, we need to multiply this product by a negative number. any negative number will do, but we choose a small (magnitude) value that will eliminate the fraction: -2.

then

f(x) = -2(x +2)(x -1/2)(x -3) = -(x +2)(2x -1)(x -3)

= -(2x² +3x -2)(x -3)

= -(2x³ -3x² -11x +6)

f(x) = -2x³ +3x² +11x -6

2. a graph created by the desmos on-line graphing calculator is shown, and the zeros are highlighted.

3. as indicated in part 1, the multiplier of this equation can be anything and the zeros will remain the same. you want a negative leading coefficient, so the "anything" is restricted to any of the infinite number of numbers that will make that be the case.

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.

its d. trust me just answer make the test just do it