Check the picture below.
notice, this line, in black, is really just a vertical line, namely x = -4.
a perpendicular line to that, like the red line there, will be a horizontal line y = [some number].
recall a vertical line always has an <u>undefined</u> slope, whilst a horizontal line always has a slope of 0.
Answer:
A. -1.6; not significant
Step-by-step explanation:
The z-score of a data set that is normally distributed with a mean of and a standard deviation of , is given by:
.
From the question, the test score is: , the mean is , and the standard deviation is .
We just have to plug these values into the above formula to obtain:
.
This simplifies to: .
.
We can see that the z-score falls within two standard deviations of the mean.
Since the value is not significant.
The correct answer is A. -1.6; not significant
Answer:
c
Step-by-step explanation:
Scalene triangles. I think