Using the expected value of a discrete distribution, it is found that:
a) His expected value is of -$2.5.
b) The fair price of a ticket is of $0.5.
<h3>What is the mean of a discrete distribution?</h3>
The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.
In this problem, the distribution for the net value of the ticket is:
Item a:
The expected value is given by:
His expected value is of -$2.5.
Item b:
With an unknown ticket price, the distribution is:
The game is fair if E(X) = 0, hence:
0.5 - x = 0
x = 0.
The fair price of a ticket is of $0.5.
More can be learned about the expected value of a discrete distribution at brainly.com/question/24855677
(6.2) and the perpendicularly to y = to 1223
You could have 6 groups of four, or 2 groups of 12, or 4 groups of 6 or 12 groups of 2 or 3 groups of 8 or 8 groups of 3
Square root of 2.1
This is because it's the smallest number, therefore the number that multiplies by itself to get 2.1 is the smallest also.
Therefore it has greater range from 2
Plug in the 5 values in the domain
f(-2) = 2(-2)^2 - 2(-2) + 5 = 8+4+5 = 17 so first number in the range is 17.
f(-1) = 2(-1)^2 -2(-1) + 5 = 2 + 2 + 5 = 9
f(0) = 0 - 2 + 5 = 5
fond f(1) and f(2) in the same way
results are 17,9,5,5,9
so the range is {5, 9,17} (you don't repeat values)