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tester [92]
3 years ago
8

Suppose that the breaking strength of a rope (in pounds) is normally distributed, with a mean of 100 pounds and a standard devia

tion of 17. What is the probability that a certain rope will break before being subjected to 130 pounds?
Mathematics
1 answer:
EleoNora [17]3 years ago
8 0

Answer:

0.961

Step-by-step explanation:

To answer this, find the area under the standard normal curve to the left of 130 pounds:

Using the function normalcdf( on a TI calculator, we get:

normalcdf(-1000, 130, 100, 17) = 0.961

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Answer:

$182.64

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3 years ago
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1/4y

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3 years ago
Sarah read 64 1/2 pages of her book in 6 hours. What is the average number of pages that Sarah reads per hour?
MAVERICK [17]

Answer:

We conclude that the average number of pages that Sarah reads per hour will be: 10.75 page per hour

Step-by-step explanation:

Given

  • Number of pages Sarah read =64\frac{1}{2}=\frac{129}{2} = 64.5
  • Number of hours Sarah spent = 6 hours

The average number of pages per hour can be calculated by simply dividing the total number of pages i.e. 64.5 pages by the number of hours spent on reading i.e. 6 hours.

Thus,

Average number of pages per hour = 64.5 pages / 6 hours

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Therefore, we conclude that the average number of pages that Sarah reads per hour will be: 10.75 page per hour

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3 years ago
A fire truck has a ladder that can extend to 120 ft in length. The ladder can be safely raised to the maximum angle of 75 with t
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Answer:

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0.9659258263=x/60

57.9555=x

57.96=x

so B

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3 years ago
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