What type of data? Usually, mean is the best representative.
Answer:
The area (probability) is: 0.6864.
Step-by-step explanation:
According to the statement, we are in front of a normal distribution with the following parameters:
µ (mean) = 0
σ (Standard deviation) = 1.
Then we need to find the area of the shaded region, which is the area between the points -1.21 < z < 0.84.
And the area (probability) is: 0.6864.
For this case we have that by definition, the equation of the line of the slope-intersection form is given by:

Where:
m: It is the slope of the line
b: It is the cut-off point with the y axis
We have the following points through which the line passes:

So the slope is:

Thus, the equation of the line is of the form:

We substitute one of the points and find "b":

Finally, the equation is:

Answer:

Umm if it’s wrong I’m sorry but I think it’s D!!
Parallel because congruency and parallelism is somehow similar and that word fits in perfectly