Set it up as proportion. Corresponding sides matter. I am going to go from the one on the left to the one on the right.

. Cross multiply to get 96=12x-12. 108 = 12x and x = 9
Z / -4 < 2....multiply both sides by -4, cancelling out the -4 on the left. And dont forget to change the inequality sign because of multiplying by a negative.
z > 2 * -4
z > -8
Answer:
Null Hypothesis,
:
= 2.0 units or
= 2.0 units
Alternate Hypothesis,
:
2.0 units or
2.0 units
Step-by-step explanation:
We are given the following data below and we have test if the population represented by Sample 1 has a mean that is 2.0 units higher than the population represented by Sample 2;
Pair : 1 2 3 4 5 6 7
Sample1 : 5 6 10 3 6 7 8
Sample2 : 4 4 3 5 5 5 3
Let
= population mean represented by Sample 1
= population mean represented by Sample 2
= population mean matched-pair differences for Sample 1 - Sample 2
So, Null Hypothesis,
:
= 2.0 units or
= 2.0 units
Alternate Hypothesis,
:
2.0 units or
2.0 units
Here null hypothesis states that the population represented by Sample 1 has a mean that is 2.0 units higher than the population represented by Sample 2.
On the other hand, alternate hypothesis states that the population represented by Sample 1 has a mean that is not 2.0 units higher than the population represented by Sample 2.
Answer:
8 times
Step-by-step explanation:
28/3.5 = 8