Answer:
1) C
2) C
3) A
Step-by-step explanation:
1) The right answer is C.
Each volunteer is a pair, consisting of the test of each chair. The difference can be compared for each individual and treated as a paired t-test.
2) The right answer is C.
There is no paired relation between the houses of each sample. There are two independent samples with the same sample size.
3) The right answer is A.
The hours are selected at random, so there is no relation between the hours picked for each worker. There are two indpendent samples with the same sample size.
We can solve for x or solve for y,
for x
y+6=5x
divide both sides by 5
=x
for y
y+6=5x
minus 6 from both sides
y=5x-6
1.) X=2, 2/2=1, Y=1
2.) X=6, 6/2=3, Y=3
3.) X=10, 10/2=5, Y=5
I hope this helps! :)
-19 to -15 would be a positive 4 difference
19 to 15 = 4 this would be a -4 difference
3 to 7 is a positive 4 difference
-3 to 7 is a difference of 10
so there is 1 with a -4 difference
answer is B.
