Answer:

So then the best answer for this case would be:
C. 2.78
Step-by-step explanation:
For this case we have the following probabability distribution function given:
Score P(X)
A= 4.0 0.2
B= 3.0 0.5
C= 2.0 0.2
D= 1.0 0.08
F= 0.0 0.02
______________
Total 1.00
The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.
If we use the definition of expected value given by:

And if we replace the values that we have we got:

So then the best answer for this case would be:
C. 2.78
Answer:
I believe the answer is d
Answer: The discounted price is $14.72 for the two medium cheese pizzas.
17.95 × 0.18 (18%) = 3.231
17.95 - 3.231 = 14.719
Answer:
6 = A, 2 = B, -5 = C
Step-by-step explanation: