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AURORKA [14]
3 years ago
15

I need help please show work

Mathematics
2 answers:
Rainbow [258]3 years ago
7 0
Where exactly is the question

Could you include it
Komok [63]3 years ago
3 0

Answer:

help with what you didnt show anything?

Step-by-step explanation:

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About 9% of the population has a particular genetic mutation. 900 people are randomly selected. Find the standard deviation for
timama [110]

Answer:

The standard deviation is of 8.586.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they have a genetic mutation, or they do not. The probability of a person having the mutation is independent of any other person, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

About 9% of the population has a particular genetic mutation.

This means that p = 0.09

900 people are randomly selected.

This means that n = 900

Find the standard deviation for the number of people with the genetic mutation in such groups of 900.

\sqrt{V(X)} = \sqrt{900*0.09*0.91} = 8.586

The standard deviation is of 8.586.

3 0
3 years ago
-2 - 3k - 2 = -2k + 8 - k
Reika [66]

Step-by-step explanation:

I'm not sure but that's what I'm getting 3k=2 jn simplest form

6 0
3 years ago
A palm tree is supported by two guy wires as shown in the diagram below.
garri49 [273]

Answer:

I think it's a or b the picture is fuzzy

8 0
3 years ago
If 5 tractors can plow a field in 4 hours, how many hours will it take 3 tractors to plow the field?
Mrac [35]

The number of hours required for 3 tractors to plow the field is 2.4 hours

<em><u>Solution:</u></em>

Given that 5 tractors can plow a field in 4 hours

We have to find out number of hours required for 3 tractors to plow the field

5 tractors can plow a field in 4 hours, So time taken for 1 tractor

\text{ time taken for 1 tractor } = \frac{\text{ time taken for 5 tractor}}{5}

\text{ time taken for 1 tractor } = \frac{4}{5} \text{ hours }

<em><u>So time taken for 3 tractors is given as:</u></em>

time taken for 3 tractor = time taken for 1 tractor x 3

\text{ time taken for 3 tractor} = \frac{4}{5} \times 3 = \frac{12}{5}

\rightarrow \frac{12}{5} = 2.4

So number of hours required for 3 tractors to plow the field is 2.4 hours

3 0
3 years ago
Will mark as Brainiest answer if you help ASAP!
spayn [35]
Vertex is (x+5)^2+12 and minimum value of f(x) is 12 
Hope this helps 
6 0
3 years ago
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