Part II: Short answer questions. 9.
The manufacturer of exercise machines for fitness centers has designed two new elliptical
machines that are meant to increase cardiovascular
fitness. The two machines are being
tested on 30 volunteers at a fitness center near the company's headquarters. The
volunteers are randomly assigned to one of the machines and use it daily for two months.
A measure of cardiovascular fitness
is administered at the start of the experiment and
again at the end. The table below contains the differences in the two scores (After-
Before) for the two machines.
Machine A
6,1
9, 7, 4, 1, 1
8, 7, 6, 3, 2,0
5, 4
5
4
3
2
1
0
Machine B
3, 5, 9
2, 5, 7
2, 4, 8, 9
1, 5, 9
0
2
(a) What is the center of the two distributions? Write a sentence comparing the two centers.
(b) How would you describe the shape of the two distributions? Write a sentence comparing
the shape of the distributions.
(c) What is the spread of the two distributions? Write a sentence comparing the spread of
the distributions.

where is the figure

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?

my apex says that it is false