The '68-95-99.7' rule says
-About 68% of values fall within one standard deviation of the mean.
-About 95% of the values fall within two standard deviations from the mean.
-Almost all of the values — about 99.7% — fall within three standard deviations from the mean.
Here
Therefore, the probability
The required probability
Answer:
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<h3>Given </h3>First, plot the points (see attached picture).
Then, connect all the points.
<h3>We see that:</h3>From our observation the figure is rhombus.
Let's confirm it with the following.
1) Find midpoints of diagonals and compare.
The midpoint of both diagonals is same (- 2, 2).
2) Find slopes of diagonals and check if their product is -1, this will confirm they are perpendicular.
<u>Confirmed.</u>
So this is a rhombus and also a parallelogram but <u>not</u> rectangle or square, since opposite angles are not right angles.
