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1 year ago

Please Help I have an exam due TODAY And 15 brainly points!

Mathematics

1 answer:

Dmitry_Shevchenko [17]1 year ago

4 0

Answer:

whats difference

Step-by-step explanation:

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The Resource Conservation and Recovery Act mandates the tracking and disposal of hazardous waste produced at U.S. facilities. Pr

aniked [119]

Answer:

(a) $E(X) = 0.383$

The expected number in the sample that treats hazardous waste on-site is 0.383.

(b) $P(x = 4) = 0.000169$

There is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.

Step-by-step explanation:

Professional Geographer (Feb. 2000) reported the hazardous waste generation and disposal characteristics of 209 facilities.

N = 209

Only eight of these facilities treated hazardous waste on-site.

r = 8

a. In a random sample of 10 of the 209 facilities, what is the expected number in the sample that treats hazardous waste on-site?

n = 10

The expected number in the sample that treats hazardous waste on-site is given by

$E(X) = \frac{n \times r}{N}$

$E(X) = \frac{10 \times 8}{209}$

$E(X) = \frac{80}{209}$

$E(X) = 0.383$

Therefore, the expected number in the sample that treats hazardous waste on-site is 0.383.

b. Find the probability that 4 of the 10 selected facilities treat hazardous waste on-site

The probability is given by

$P(x = 4) = \frac{\binom{r}{x} \binom{N - r}{n - x}}{\binom{N}{n}}$

For the given case, we have

N = 209

n = 10

r = 8

x = 4

$P(x = 4) = \frac{\binom{8}{4} \binom{209 - 8}{10 - 4}}{\binom{209}{10}}$

$P(x = 4) = \frac{\binom{8}{4} \binom{201}{6}}{\binom{209}{10}}$

$$ P(x = 4) = \frac{70 \times 84944276340}{35216131179263320}$

$P(x = 4) = 0.000169$

Therefore, there is a 0.000169 probability that 4 of the 10 selected facilities treat hazardous waste on-site.

8 0

2 years ago

Help me with my maths watch, thank you :)<br> please

Veronika [31]

Answer:

there could be 9 different outcomes at the end of the game

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Jay earned $432.18 in net pay for working 32 hours. He paid $82.42 in federal and state taxes, and $31.70 in FICA taxes.

Neporo4naja [7]

1) $17.07
2)$97.22
3) 79%

3 0

3 years ago

Read 2 more answers

What is expression is equivalent to 5(9 t)

iris [78.8K]

Here you have: (45t)

8 0

2 years ago

Convert 60 miles per hour to feet per minute. A) 88 ft/min B) 528 ft/min C) 5,280 ft/min Eliminate D) 316,800 ft/min

Zinaida [17]

First off, we neee to convert the units:

1 miles = 5280 feet
1 hour = 60 minutes

In this case:

60 miles = 5280×60 = 316800 feet
1 hour = 60 minutes

To find the answer, which is the speed,”we divide the length by it's time:

$\frac{316800}{60} \\ = \ \frac{ \ 5280\times 60}{60} \\ = 5280$

Therefore the answer is C. 5280 ft/min.

Hope it helps!

3 0

2 years ago