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Dafna1 [17]
1 year ago
7

In the United States, 40% of the population have brown eyes (based on data from Dr. P. Sorita Soni at Indiana University). If 14

people are randomly selected, find the probability that at least 12of them have brown eyes.
Mathematics
1 answer:
Sav [38]1 year ago
4 0

Answer:

0.0006087 (4 sf)

Step-by-step explanation:

Binomial distribution:  X ~ B(n, p)

where n is the number of trials and p is the probability of success

Let the random variable X be the number of people with brown eyes

n = 14

p = 40% = 0.4

Therefore,  X ~ B(14, 0.4)

P(X ≥ 12) = 1 - P(X ≤ 11)

              = 1 - 0.9993913226...

              = 0.000608677...

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A mathematics book has 360 pages, of which 50% are on algebra, 20% on geometry and the remainder on arithmetic how many pages ar
Arte-miy333 [17]

Answer:

30% of the pages are arithmetic, or 108 pages

Step-by-step explanation:

50% are on algebra = 180 pages

360 x .5 = 180

20% are on geometry = 72 pages

360 x .2 = 72

30% are on arithmetic = 108

180 + 72 + 108 = 360 pages

50% + 20% + 30% = 100%

6 0
2 years ago
Answers from anybody please??
MariettaO [177]
The ratio of areas is the square of the ratio of linear dimensions. The smaller area is
.. (27 in^2)*(8/12)^2 = 27*(4/9) in^2 = 12 in^2
4 0
3 years ago
Someone help me find the answer
Whitepunk [10]

Answer:

5in

Step-by-step explanation:

You can find it by subtracting the side that has 15 in and the side that contains that 10 in. 15-10=5

3 0
3 years ago
Jose loves to run, he loves to keep track of his running miles. Last week he ran
Gemiola [76]

Answer:

Average: 11.4 Miles Median: 9 Range is 20 or (5,25)

Step-by-step explanation:

AVERAGE)

Add all of the miles up for the week and divide by the number of days he ran so it'd look like this: 8 + 5+ 9+ 10+ 25 = 57

Now, divide the 57 by 5 days to get 11.4

MEDIAN

Organize your list of numbers from least to greatest

It'd look like this: 5,8,9,10,25

Now cross out one number on each end until you get to the middle.

so you cross out 5 and 25. Then you are left with 8,9,10. Cross out 8 and 10. Your final answer should be 9

RANGE

This is the difference between the highest and lowest # (unless it is for a function- then it is the range of y-values).

If this has a graph to go with it look up the way it wants you to write the range, you can write it as (5,25)

8 0
3 years ago
-52.5 as a mixed number
Thepotemich [5.8K]

-52 and 1/2


Ik its late

3 0
3 years ago
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