For a sample of n=6 lightbulbs. The probability of a broken bulb is 9%. What is...

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Answer 1

Answer #1

Please note $^nC_r = \frac{n!}{(n-r)! * r!}$

Binomial Probability = ⁿC_x * (p)^x * (q)^n-x, where n = number of trials and x is the number of successes.

Here n = 6, p = 0.09, q = 1 – p = 0.91.

P(X = 2) = ⁶C₂ * (0.09)² * (0.91)^6-2 = 0.0833

Answer 2

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