Answer:
The expected value of random variable X is often written as E(X) or µ or µX.
Step-by-step explanation:The expected value is the 'long-run mean' in the sense that, if as more and more values of the random variable were collected (by sampling or by repeated trials of a probability activity), the sample mean becomes closer to the expected value.
Answer:
x ≤ - 27
Step-by-step explanation:
Given
≥ 3
Multiply both sides by - 9, reversing the symbol as a result of multiplying by a negative quantity.
x ≤ - 27
I think the answer is B, if not not mistaken.
10,000 - (1/2 x 10,000) - (1/4 x 10,000) - (1/10 x 10,000) = 10,000 - 5,000 - 2,500 - 1,000 = 1,500
$1,500 is being spent on staffing for the party.
