________can i get some help on this _______
1 answer:
Answer:
A
Step-by-step explanation:
The median AB bisects DC at right angles ,hence BD = 4
Using Pythagoras' identity on the right triangle ABD
The square on the hypotenuse AD is equal to the sum of the squares on the other 2 sides, that is
AB² + BD² = AD², that is
AB² + 4² = 5²
AB² + 16 = 25 ( subtract 16 from both sides )
AB² = 9 ( take the square root of both sides )
AB = = 3 feet → A
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The lottery's anticipated worth is $80.
Given that,
The probability of receiving $125 is 0.25; the likelihood of receiving $100 is 0.3; and the likelihood of receiving $50 is 0.45.
A) EV=125*.2+100*.3+50*.5=$80
The lottery's anticipated worth is $80.
The expected value is obtained by multiplying each result by its likelihood.
The expected value of the lottery is then calculated by adding up all of these.
This is what we have: ;;
125(0.2) + 100(0.3) + 50(0.5) (0.5)
= 25 + 30 + 25 = $80
B) This is the formula for variance is shown in figure :
So, we can calculate the variance as follows:
.2*(125-80)^2+.3*(100-80)^2+.5*(50-80)^2=975
C) A risk-neutral person would pay $80 or less to play the lottery.
To learn more about probability click here:
#SPJ4
Answer:
X = 1, 2.
Step-by-step explanation:
In the sample space, the most greens you can get are 2. The only other thing with green would be one green in the pair. So, the random variable for picking an outcome of green would be X = 1, 2.
Hope this helps!
