If X and Y Are Two Variables with E(XY)= 10

question 230

True/False

If X and Y are two variables with E(XY)= 10.56,E(X)= 4.22,and E(Y)= 5.34,then COV(X,Y)= 1.0.

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Definitions:

365-Day Year

A method of calculating interest that uses a fixed calendar year of 365 days for computations, commonly used in financial contexts.

Exact Simple Interest

Interest calculation method using a 365-day year that does not account for the effect of compounding.

365-Day Year

A method used for calculating interest based upon a calendar year, counting all 365 days (or 366 in a leap year), typically used for more precise financial calculations.

Ordinary Simple Interest

Interest calculated on the principal amount of a loan or deposit, based on a simple calculation without compounding.