The prime factors are 2, 4, 8
Select any two x and plug it into the equation to get the corresponding y:
I’ll do 1 and 2 for example.
x = 1
y = -2(1) + 4
y = -2 + 4
y = 2
So we have the point (1, 2)
x = 2
y = -2(2) + 4
y = -4 + 4
y = 0
We have the point (0, 2)
Plot (1, 2) and (0, 2) and draw the line that goes through both.
Answer:
Mean = 94
Standard deviation = 1.12
The sampling distribution of the sample mean is going to be normally distributed, beause the size of the samples are 80, which is larger than 30.
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean
and standard deviation
, the sample means with size n of at least 30 can be approximated to a normal distribution with mean
and standard deviation, which is also called standard error 
In this problem, we have that:

By the Central Limit Theorem
The sampling distribution of the sample mean is going to be normally distributed, beause the size of the samples are 80, which is larger than 30.
Mean = 94
Standard deviation:

I am pretty sure it is B.
Answer:
The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.