Answer:
c. 99.72% of the time the random variable assumes a value within plus or minus 1 standard deviation of its mean
Step-by-step explanation:
In a normal distribution, the shape is bell-shaped; this means it is symmetric.
The area under a normal distribution will always be equal to 1.
The mean, median and mode in a normal distribution are equal.
However, the data assumes values within 1 standard deviation above or below the mean 68% of the time, not 99.72% of the time. This is the characteristic that doesn't fit.
Answer:
x = -5
Step-by-step explanation:
-x = 5
*-1 *-1
-x * -1 = x
5 * -1 = -5
x = -5
1+3x
Distribute -7 through the parenthesis
Answer:
7/20
Step-by-step explanation:
Lowest common denominator
3/5 turns into 12/20.
1/4 turns into 5/20
12 - 5 = 7
Answer:
D
Step-by-step explanation:
We are given that the side of a square is: 8√12.
And we want to find the area.
The area of a square is given by:
Where <em>s </em>is the side length. Remember that all side lengths in a square are equivalent.
Therefore, by substitution, we acquire:
Evaluate. We can expand:
Simplify:
Hence, our final answer is D.