What are the null and alternative hypotheses? Use μ
= mean hours of sleep for LMC students.
(0
H
0
: =7.12
μ
=
7.12
) and (
H
a
: <7.12
μ
<
7.12
)
(0
H
0
: =6.9
μ
=
6.9
) and (
H
a
: <6.9
μ
<
6.9
)
(0
H
0
: =6.9
μ
=
6.9
) and (
H
a
: ≠6.9
μ
≠
6.9
)
Correct. The null hypothesis is a claim of “no difference.” It says “the average for college students is the same as the average reported for all Americans.” So =6.9
μ
=
6.9
. The alternative hypothesis reflects our claim. This scenario tells us that the student “wondered if the average...is different for LMC students.” This says ≠6.9
μ
≠
6.9
.

take the top number and divide it by a the bottom number

step-by-step explanation:

1/2 1 divied by 2 = .5

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

false

step-by-step explanation:

false : it can not go to 9 the highest that part can go is 7

here is your proof

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15