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A consumer organization inspecting new TV sets found that 65% had no defects, 23% has one...

A consumer organization inspecting new TV sets found that 65% had no defects, 23% has one appearance defect, 9% had two appearance defects, and 3% had three appearance defects.

a) If X is the number of appearance defects, fill out the probability distribution on the table below:

X: 0 1 2 3

P(X) - - - -

b) Show that this is a probability distribution.

c) Find the expected number of appearance defects. You can use the formulas or the calculator.

d)Find the standard deviation appearance defects. You can use the formulas or the calculator.

Math   Statistics-And-Probability   
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