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GREYUIT [131]
3 years ago
15

The duration of routine operations at chicago general hospital has approximately a normal distribution with an average of 130 mi

nutes and a standard deviation of 12 minutes. what proportion of operations last at least 120 minutes
Mathematics
1 answer:
vredina [299]3 years ago
5 0

Answer:

79.77%

Step-by-step explanation:

P(X≥120) = normalcdf(120,1e99,130,12) = 0.7976716754 ≈ 0.7977 = 79.77%

Therefore, about 79.77% of operations last at least 120 minutes

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Estado tratando esto por mucho tiempo​
maksim [4K]

Answer:

1/2

Step-by-step explanation:

Paso Uno: \frac{5}{1}* \frac{5}{1} *\frac{5}{1}* \frac{5}{1} *\frac{5}{1}* 1/10= 5/10

Paso Dos: Simplificar:

5/5=1

10/5=2

Paso Tres: fracción es 1/2

6 0
3 years ago
An urn contains six red balls numbered 1, 2, 3, 4, 5, 6, two white balls numbered 7, 8, and two black balls numbered 9, 10. A ba
Svetradugi [14.3K]

Answer:

2/10 = 1/5

Step-by-step explanation:

To figure out the probability of something, we can take

(number of outcomes of that something) / (number of total outcomes)

Here, we are trying to find the probability that the ball is white. The number of outcomes that are possible with the ball being white is 2, as there are two white balls and you can only pick one. You can pick either of the two white balls, but there is no way to pick one of them two times, pick two of them at once, or pick any other ball and have it be white.

The number of total outcomes is 10. There are 10 balls, and you can only pick one ball at a time. There are only 10 options to choose from.

Therefore, we can plug our numbers into the formula above and get 2/10 = 1/5 as our probability

8 0
2 years ago
The slope of the line whose equation is x + y = 6 is: -1 1 6
nadya68 [22]

Answer:

the slope of the line x+y = 6 is -1.

Step-by-step explanation:

slope = - coefficient of x

----------------------

coefficient of y

slope = -1 /1

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7 0
3 years ago
Oliver reads 28 1/2 pages of a book in 1 1/6 hours. Express his reading speed in pages per hour
Inessa05 [86]

Hello there

in order to find the answer you need to multiply 28.5 by 1 1/6

you get 171/7

the answer is 24.4 pages

thank you

hope this helps

Best Regards Queen Z

3 0
3 years ago
Read 2 more answers
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koban [17]

Answer:

C)infinitely many solutions

Step-by-step explanation:

5x+8-7x=-4x+1\\-2x+8=-4x+1\\2x+8=1\\2x=-7\\x=-3.5

4 0
3 years ago
Read 2 more answers
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