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3 years ago

12

Air consists of 78% nitrogen, 20% oxygen, 1% water vapor, 0.97 % inert gases and 0.03% carbon dioxide and other gases. How many

solvents are present in air?
a.1
b.2
c.4
d.5
e.3

1 answer:

fenix001 [56]3 years ago

3 0

Answer:

d hope it helps make brainlliest ty

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(So “/” will basically mean divide)
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3 years ago

Hollis put a layer of boxes in the bottom of a container. Each box has a volume of 1 cubic foot. The base layer of boxes in the

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288 ft³

Step-by-step explanation:

Given that

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3 years ago

manufacturing company produces digital cameras and claim that their products maybe 3% defective. A video company, when purchasin

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Answer:

P(X>17) = 0.979

Step-by-step explanation:

Probability that a camera is defective, p = 3% = 3/100 = 0.03

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Probability that a camera is working, q = 1 - p = 1 - 0.03 = 0.97

Probability that more than 17 cameras are working P ( X > 17)

This is a binomial distribution P(X = r) $nCr q^{r} p^{n-r}$

$nCr = \frac{n!}{(n-r)!r!}$

P(X>17) = P(X=18) + P(X=19) + P(X=20)

P(X=18) = $20C18 * 0.97^{18} * 0.03^{20-18}$

P(X=18) = $20C18 * 0.97^{18} * 0.03^{2}$

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P(X=19) = $20C19 * 0.97^{19} * 0.03^{1}$

P(X=19) = 0.3364

P(X=20) = $20C20 * 0.97^{20} * 0.03^{20-20}$

P(X=20) = $20C20 * 0.97^{20} * 0.03^{0}$

P(X=20) = 0.5438

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The probability that there are more than 17 working cameras should be 0.979 for the company to accept the whole batch

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4 years ago

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