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Cloud [144]
2 years ago
10

How to find overall range

Mathematics
1 answer:
Bogdan [553]2 years ago
8 0
To find range of a set of numbers you need to get the largest number and subtract the smallest number from it.
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A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of s
Naily [24]

Answer:

The mean is \mu = 131

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:

\sigma = 39

What is the mean of this normal distribution if the probability of scoring above x = 209 is 0.0228?

This means that when X = 209, Z has a pvalue of 1-0.0228 = 0.9772. So when X = 209, Z = 2.

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

2 = \frac{209 - \mu}{39}

209 - \mu = 2*39

\mu = 209 - 78

\mu = 131

The mean is \mu = 131

7 0
2 years ago
Helppppppppppppppp!!!!
alex41 [277]

Answer:

Step-by-step explanation:

i don’t see a picture?

8 0
3 years ago
Point M is on line segment \overline{LN}
MissTica

Considering the relation built the presence of point M on line LN, the numerical length of LN is of 9 units.

<h3>What is the relation from the presence of point M on the line LN?</h3>

Point M splits line LN into two parts, LM and MN, hence the total length is given by:

LN = LM + MN.

From the given data, we have that:

  • LN = 2x - 5.
  • LM = 3.
  • MN = x - 1.

Hence we first solve for x.

LN = LM + MN.

2x - 5 = 3 + x - 1

x = 7.

Hence the total length is:

LN = 2x - 5 = 2 x 7 - 5 = 14 - 5 = 9 units.

More can be learned about relations and lines at brainly.com/question/2306122

#SPJ1

3 0
11 months ago
If you add up all the numbers on a 1-10 ten-sided dice, you get 55. What’ the sum of all sides in a 20 dice?
OleMash [197]
If you add up all the numbers on a 1-10 ten-sided dice, you get 55. The sum of all sides on a 20-sided dice is 210.
6 0
2 years ago
Subtract 16a+3 from 13a−5
AleksAgata [21]

Answer: -3a - 8

Step-by-step explanation:

(13 a - 5 ) - (16a + 3) = 13 a - 5 - 16a - 3 = -3a -8

5 0
3 years ago
Read 2 more answers
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