Three times the product of four and twelve.
Answer:
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Step-by-step explanation:
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Answer:
It's A.
Step-by-step explanation:
an = 4.2^n
When n = 1, a1 = 4 . 2 = 8.
When n = 2, a2 = 4 . 2^2 = 16
When n = 3, a3 = 4 . 2^3 = 32
and a4 = 64.
The expected value of the number of points for each turn is 0.25
<h3>What is expected value?</h3>
Expected value describes the long term average level of a random variable based on its probabilty distribution.
Now, Probability that 2 heads come up is
P(2 is H) = 1/4
Probability that 1 heads come up is
P(1 is H) = 2/4
⇒P(1 is H) = 1/2
Probability that no head will come up
P(no H's) = 1/4
Hence, the expected value for winning of 2points, 1point and lose of3 points is given as-
Expected value = 2 * P(2 is H) + 1 * P(1 is H) - 3 * P(no H's)
⇒Expected value = 2 * 1/4 + 1 * 1/2 - 3 * 1/4
= 0.5 + 0.5 - 0.75
⇒Expected value = 0.25
More about Expected value :
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