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Volgvan
3 years ago
12

Can somebody please help me, i really didnt understand my teacher at all

Mathematics
1 answer:
Kamila [148]3 years ago
4 0

Answer:

Step-by-step explanation:

It is a solution because if you plug in 84 for b you get 84/12 = 7

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45

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Solve the following equation for I. A = 2 πr + πrl. Explain each step.<br> BRAINLY IF CORRECT
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Answer:

Step-by-step explanation:

A  = 2π +πrl                

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2 years ago
An instructor who taught two sections of engineering statistics last term, the first with 20 students and the second with 30, de
Lelechka [254]

Answer:

(a) P(X=10) = 0.2070

(b) P(X\geq 10) = 0.3798

Step-by-step explanation:

Note that in this problem we have an initial population N = 50, of which 30 fulfill a certain characteristic "m" (belong to the second section). Then, from the population N, a sample of size n = 15 is selected and it is desired to know how many comply with the desired characteristic (second section).

So

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(a)

Therefore, to answer question (a) we use the following equation presented in the attached image:

Where:

N = 50\\m = 30\\n = 15\\X = 10

Then:

P (X = 10) = \frac{\frac{30!}{10!(30-10)!}\frac{20!}{5!(20-5)!}}{\frac{50!}{15!(50-15)!}}\\\\\\P(X=10) = 0.2070

(b)

For part (b) we have:

P(X\geq10) = 1-P(X

P(X\geq 10) = 1-0.6202 \\\\P(X\geq 10) = 0.3798

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3 years ago
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Answer:

Step-by-step explanation:

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Answer:

c ) 6

d) 1 0 this are correct answer ok

8 0
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