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marta [7]
3 years ago
15

Exponential functions algebra 1

Mathematics
1 answer:
meriva3 years ago
5 0
Your question is very unclear
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A worn, poorly set-up machine is observed to produce components whose length X follows a normal distribution with mean 14 centim
Akimi4 [234]

Answer:

74.86% probability that a component is at least 12 centimeters long.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 14

Variance is 9.

The standard deviation is the square root of the variance.

So

\sigma = \sqrt{9} = 3

Calculate the probability that a component is at least 12 centimeters long.

This is 1 subtracted by the pvalue of Z when X = 12. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{12 - 14}{3}

Z = -0.67

Z = -0.67 has a pvalue of 0.2514.

1-0.2514 = 0.7486

74.86% probability that a component is at least 12 centimeters long.

6 0
3 years ago
Find dy of the fol<br>of the following<br>fuction​
ikadub [295]

write question properly bro

8 0
2 years ago
What is 23 1/3 as an improper fraction
katen-ka-za [31]

Answer:

70/3

Step-by-step explanation:

  1. Multiply: 23*3
  2. 23*3=69
  3. Add: 69+1
  4. 69+1=70
  5. 70/3

<em>Hope this helped!! :)</em>

<em>Brainliest?!?!</em>

<em>Stay safe and have a wonderful day/afternoon/night!!!</em>

4 0
2 years ago
Simplify the square root √411
kherson [118]

Answer:

20.27

Step-by-step explanation:

\sqrt{411} =20.27

8 0
3 years ago
Read 2 more answers
HELPP ME PLSSSSS!!!!!
rewona [7]
Just do 5 1/5 divided by 1 2/5
5 0
2 years ago
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