Suppose μ1 and μ2 are true mean stopping distances at 50 mph for cars of a certain type equipped with two different types of braking systems. use the two-sample t test at significance level 0.01 to test h0: μ1 − μ2 = −10 versus ha: μ1 − μ2 < −10 for the following data: m = 6, x = 114.4, s1 = 5.08, n = 6, y = 129.2, and s2 = 5.32. calculate the test statistic and determine the p-value.

answer: a

step-by-step explanation:

10.2 units

a² + b²= c²

24² + 7² = c²

c= 25

-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

d

gimmee one of those gold crowns!

~coco