Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities. Assume the probability that you will make a sale on any given telephone call is 0.21. Find the probability that you (a) make your first sale on the fifth call, (b) make your first sale on the first, second, or third call, and (c) do not make a sale on the first three calls.

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A: Known fact: ddx∫pxqxft dt =fqx q'x-fpx p'x.

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A: Given is a question on the probability of failure/success. Number of failed O-rings 0 1 2 3 4 5 6...

A: Use integration by parts formula.

A: Use the formula and evaluate.

A: we know that,Cr=n!(n-r)×ばつr!nand r!=r(r-1)(r-2)×ばつ1

A: Given , We have to find value of x

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A: Discrete Distribution: Binomial, Hypergeometric, Poisson, Continuous Distribution: Weibull,...

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A: Given, 25y2 = 121

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A: Find value of x Pythagorean theorem a2+b2=c2 substitute a=4, b=6, and c=x 42+62=x2 16+36=x2 x2=52...

A: Given : PS is parallel to QR TP = 15TS = 16PQ = 30

A: Topic: integration

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