Stereo speakers are manufactured with a 0.15 probability of being defective. Five speakers are randomply selected. Let the random variable X be defined as the number of defective speakers. Find the expected value and standard deviation.

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step-by-step explanation:

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(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3