Let X be the number of failures for a certain machine during a month. Its cumulative...

Question

Question

Let X be the number of failures for a certain machine during a month. Its cumulative
distribution function is

0 if x < 0 0.17 if 0 < x < 1 0.40 if 1 < x < 2 Fx(x) = { 0.59 if 2 < x <3 0.72 if 3 < x < 4 0.80 if 4 < x < 5 if x > 5 1

What is the expected number of failures for a month?
A. 2.50 B. 3.00 C. 2.32 D. 11.94 E. none of the above

math Statistics-And-Probability

Answer 1

Answer #1

Here the pm f will be 2 3 4. S olu 0:12 0.23 0:19 0:13 008 0.96 E ial Ex pixel = +023 +0.38 +0:39 + 0.32+ I 2:32 ol Scanned w

Answer 2

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