Suppose X Is a Random Variable Best Described by a Uniform

question 59

Multiple Choice

Suppose x is a random variable best described by a uniform probability distribution with c = 30 and d = 90. Find P(30 ≤ x ≤ 45) .

• A) 0.25
• B) 0.15
• C) 0.35
• D) 0.025

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Definitions:

Determinant

A scalar value that can be calculated from the elements of a square matrix and encapsulates certain properties of the matrix. It is often used to determine the invertibility of the matrix.

Cramer's Rule

A theorem in algebra that provides an explicit solution to a system of linear equations with as many equations as unknowns, using determinants.

System of Linear Equations

A set of one or more linear equations that share the same variables.

Interest Rate

A percentage representing the cost of borrowing money or the return on investment for savings.