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musickatia [10]
2 years ago
9

What is the probability of the number being between 2-7?

Mathematics
1 answer:
Ivahew [28]2 years ago
5 0

Answer:

6/infinity

Step-by-step explanation:

There are infinity numbers, and in the list (2, 3, 4, 5, 6, 7) there are 7-2+1=6 numbers. Therefore, the answer is 6/infinity. Very unlikely!

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The manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .
Misha Larkins [42]

Answer:

0.1507 or 15.07%.

Step-by-step explanation:

We have been given that the manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .016 millimeters. To be acceptable the diameter needs to be between 21.97 and 22.03 millimeters.

First of all, we will find z-scores for data points using z-score formula.

z=\frac{x-\mu}{\sigma}, where,

z = z-score,

x = Sample score,

\mu = Mean,

\sigma = Standard deviation.

z=\frac{21.97-22}{0.016}

z=\frac{-0.03}{0.016}

z=-0.1875

Let us find z-score of data point 22.03.

z=\frac{22.03-22}{0.016}

z=\frac{0.03}{0.016}

z=0.1875

Using probability formula P(a, we will get:

P(-0.1875

P(-0.1875  

P(-0.1875

Therefore, the probability that a randomly selected ball bearing will be acceptable is 0.1507 or 15.07%.

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3 years ago
Lines k and l are parallel. When lines k and l are cut by the transversals below, an isosceles triangle is formed.
Slav-nsk [51]
The angle to the left of angle 1 is 70, so angle 1 is equal to 180 - 70 - 70 which is 40,
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Please help! What is the distance, rounded to the nearest tenth, between the points (0,5) and (8,0)? ___ units
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It’s 9.4 ...................
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And isosceles right triangle has two legs that are the same length and hypotenuse of 10 inches. Find the dimension of the leg.
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