1.

The relationship between the mean and variance of the exponential distribution is expressed by _____

A. μ= λσ<sup>2</sup>
B. μ= σ<sup>2</sup>/λ
C. σ<sup>2</sup>=λ<sup>2</sup> μ
D. σ<sup>2</sup>=μ/λ<sup>2</sup>
Answer» B. ‚âà√≠¬¨‚à´= ‚âà√¨‚àö√¢<sup>2</sup>/‚âà√≠¬¨‚Ñ¢


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