5.17 online communication. a study suggests that 60% of college student spend 10 or more hours per week communicating with others online. you believe that this is incorrect and decide to collect your own sample for a hypothesis test. you randomly sample 160 students from your dorm and find that 70% spent 10 or more hours a week communicating with others online. a friend of yours, who offers to you with the hypothesis test, comes up with the following set of hypotheses. indicate any errors you see. h0 : ˆp < 0.6 ha : ˆp > 0.7

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

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.