Answer:
D.) The expected value is 1.78
Step-by-step explanation:
The expected value of a probability distribution is evaluated using the formula.
Expected Value, 
Therefore, from the given probability distribution, we have:
E(X)=(0*0.3)+(1*0.2)+(2*0.16)+(3*0.2)+(4*0.04)+(5*0.1)
E(X)=1.78
The Expected value of X is 1.78.
The correct option is D.
Which part needs answering ?
Answer:
Select all the lines with slope 
.
Step-by-step explanation:
Use the slopes to help you answer this kind of questions.
The slope of the line going through: (1, - 2) and (3,4) is given by:
We plug in the coordinates to get:
All lines that are perpendicular to this line has slope .
Answer:
1)
1/2 - C
1/4 - B
1/8 -D
? - A
1/2*1/4*1/8 = 1/16 of the class got an A
2) 40 lb = 840 oz
840 x* 2 1/4 = 1890 oz
Archie's dog eats 1890 oz of dog food in 2 1/4 years.
Answer:
6 millimeters
Explanation:
The standard deviation is the square root of the variance.
Since the variance is 36, the standard deviation would be
√36 = 6
