Answer:
The correct answer is 2.2.
Step-by-step explanation:
The following represents the probability distribution for the daily demand of microcomputers at a local store:
Demand Probability
f(0)= .1
f(1)= .2
f(2)= .3
f(3)= .2
f(4)= .2.
Expectation of a discrete probability function f of the random variable x is given by ∑ x × f(x).
Thus the expected value of demand is given by
0.1 × 0 + 0.2 × 1 + 0.3 × 2 + 0.2 × 3 + 0.2 × 4 = 2.2.
The expected daily demand is 2.2.
Answer:
1/65 is the answer. the main part behind it is using subtraction and divison to find the answer
The difference of four times a number and 5 is 39 can be expressed algebraically as:
4x - 5 = 39
Now, we can solve for x.
Add 5 to both sides:
4x - 5 + 5 = 39 + 5
4x = 44
Divide both sides by 4 to solve for x:
4x/4 = 44/4
x = 11
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