Proving the random variable equation
Question: Consider the random variable X.
Prove that V(X) = E(X2) - E2 (X) [V (X) is the variance of X].
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Calculate the value of P(X = 2) and P(X <= 5 | X >= 2) [P -> probability]. Calculate the probability function and the probability distribution of X.
A researcher is interested in the relationship between fathers' performance in high school and their children's social skills. She obtains the high school transcripts of fathers and records their ending GPA. She then measures the social skil
Let X be a random variable with density function Compute P (0.5 < X < 1). Compute F (x) for all x > 0. Find b such that P (X < b) = 0.90.
Romano Corporation allocates administrative costs on the basis of staff hours. Short-run monthly usage and anticipated long-run monthly usage of staff hours for Operating Departments 1 and 2 follow.
Qestion: Consider the random variable X. Prove that V(X) = E(X2) - E2 (X) [V (X) is the variance of X].
An analysis of comparative balance sheets, the current year%u2019s income statement, and the general ledger accounts of Solomon Corp. uncovered the following items. Assume all items involve cash unless there is information to the contrary.
We know that in one hour the probability of entering 15 clients is 0,031 and in the same period the probability of entering 16 clients is 0,062. Now, calculate the mean of clients entrance in the bank agency by hour.
If a dealer has sold 200 of these cars, what is the approximate probability that it will need to service at most 50 of them?
Assuming use of the direct method, over how many square feet would the Building Maintenance cost be allocated (i.e., spread)?
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