All categories

2 years ago

Please help! It's homework! Question 8.

Mathematics

1 answer:

Katen [24]2 years ago

5 0

Answer:

2467 = 200 (1.67) 2000

Step-by-step explanation:

diver theat ovlqme

You might be interested in

The measure of <ABC is 90 degrees and the measure of <DBC is 33 degrees

Pavel [41]

Answer:

Step-by-step explanation:

4 0

3 years ago

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

What is the value of Y

Keith_Richards [23]

76 degrees. Angle y is supplementary to angle “2x+20”.

4 0

2 years ago

The circumference of a

timama [110]

9514 1404 393

Answer:

160,000 m²
16 ha

Step-by-step explanation:

The side length of a square is 1/4 of the perimeter, so the side length of the square orchard is (1600 m)/4 = 400 m.

The area of a square is the square of the side length, so the area of the orchard is (400 m)² = 160,000 m².

A hectare is 10,000 m², so the area of the orchard in hectares is ...

16·(10,000 m²) = 16 ha

3 0

2 years ago

5000 people voted in an election. Candidate Smith claimed 52% of the votes. Candidate Adams claimed 2681 votes.

SCORPION-xisa [38]

Answer:

Step-by-step explanation:

u got the first 2 correct

percentage of votes Adams claims :

so he claims 2681 out of 5281..

2681 / 5281 = (jeez...u dont want it rounded)...ok....its :

0.50766900208 which equals 50.766900208 % <==

the total of the percentages :

52% + 50.766900208% = 102.766900208 % <==

6 0

2 years ago

Read 2 more answers