Solve the given problem. Lizzie is 2 years older than three times her sister Clarissa’s age. If Clarissa is 4 years old, how old
2 answers:
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Answer:
a. .
b.
Step-by-step explanation:
By the definition, the expected value of a random variable X with probability mass function p is given by where the sum runs over all the posible values of X. Given a function g, the random variable Y=g(X) is defined. Note that the function g induces a probability mass function P' given by P'(Y=k) = P(X=g^{-1}(k)) when the function g is bijective.
a. Note that for 1/3ln(2)+1/6ln(5) by choosing the function g(x) = ln(x) the expression coincides with E(g(x)), because if Y = g(x) then E(Y) = P'(Y=1)*ln(1)+P'(Y=2)*ln(2)+P'(Y=5)*ln(5) = P(X=1)*ln(1)+P(X=2)*ln(2)+P(X=5)*ln(5).
b. On the same fashion, the function g(x) = xe^{xt} fullfills the expression of E[g(X)]
The given Statement which we have to prove using mathematical induction is
for , n≥4.
⇒For, n=4
LHS
LHS >RHS
Hence this statement is true for, n=4.
⇒Suppose this statement is true for, n=k.
-------------------------------------------(1)
Now, we will prove that , this statement is true for, n=k+1.
LHS
Hence this Statement is true for , n=k+1, whenever it is true for, n=k.
Hence Proved.