Question

If $\textrm{E}[Q|P] = 3P+7$, $\textrm{E}[P]=2$ and $\textrm{E}[P^2]=8$ what is $\textrm{E}[PQ]$, can this be solved?

score 36 · Answer 1 · 2026-04-17 06:51:45

36

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If $\textrm{E}[Q|P] = 3P+7$, $\textrm{E}[P]=2$ and $\textrm{E}[P^2]=8$ what is $\textrm{E}[PQ]$, can this be solved?

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score 26 · Answer 2 · 2026-04-11 20:13:28

26

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91

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score 67 · Answer 4 · 2026-04-16 15:50:32

67

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score 226 · Answer 6 · 2026-03-26 12:35:52

226

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score 676 · Answer 7 · 2026-04-11 14:12:38

676

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score 1.9k · Answer 12 · 2026-04-13 13:45:22

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score 19 · Answer 13 · 2026-04-11 09:13:25

19

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score 62 · Answer 14 · 2026-04-11 14:43:34

62

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score 99 · Answer 15 · 2026-04-13 15:12:07

99

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List Question

If $\textrm{E}[Q|P] = 3P+7$, $\textrm{E}[P]=2$ and $\textrm{E}[P^2]=8$ what is $\textrm{E}[PQ]$, can this be solved?

Distribution of variables

Expectation with a variable that satisfies uniform distribution

If $ E[|X|^k]<\infty$ for all $k \in [a,b]$ then $f(k)=E[|X|^k]$ is continuous on $[a,b]$.

Expected Revenue earned by a tour operator

Suppose $E(2^X)=4$. Prove that $P(X \ge 3) \le {1 \over 2}$.

Upper bound on higher moments of the mean of iid random variables

Longest chain in directed graph

Singular correlation matrix implies linear dependence

Estimate the number of chocolate chips a cookie will have on average

Is the expectation of the median the median itself?

Marginal Density and Expected value of two continous random variables

When is $E<\infty$

Expection of the ratio of two probabiltiy density functions

What is the difference between these formulas for standard deviation?

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