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zalisa [80]
3 years ago
6

Can someone help I know it's easy. ( picture attached)

Mathematics
1 answer:
lys-0071 [83]3 years ago
8 0

Answer:

B 125.6

Step-by-step explanation:

We can use the formula for the circumference to solve.

C=2\pir

C=2\pi(20)

C=(6.28)(20)

C=125.6

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Answer:

The probability that it will take fewer than six customer contacts to clear the inventory is 0.8%.

Step-by-step explanation:

We have a probability of making an individual sale of p=0.15.

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P=\dbinom{n}{4}p^4q^{n-4}=\dbinom{n}{4}0.15^4\cdot 0.85^{n-4}

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This probability can be calculated adding the probability from n=4 to n=6:

P=\sum_{n=4}^6P(n)=\sum_{n=4}^6 \dbinom{n}{4}0.15^4^\cdot 0.85^{n-4}\\\\\\P=0.15^4(\dfrac{4!}{4!0!}\cdot 0.85^{4-4}+\dfrac{5!}{4!1!}\cdot0.85^{5-4}+\dfrac{6!}{4!2!}0.85^{6-4})\\\\\\P=0.15^4(1\cdot0.85^0+5\cdot0.85^1+15\cdot0.85^2)\\\\\\P=0.00051(1+4.25+10.84)\\\\\\P=0.00051\cdot16.09\\\\\\P=0.008

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Read 2 more answers
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