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RUDIKE [14]
3 years ago
6

30 Points! To Who Ever Can Give Me The Answer

Mathematics
1 answer:
n200080 [17]3 years ago
5 0

Answer:

im sorry, the answer to what?

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Assume that adults have IQ scores that are normally distributed with a mean of 96 and a standard deviation of 15.7. Find the pro
astraxan [27]

Answer:

4.05% probability that a randomly selected adult has an IQ greater than 123.4.

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 question, we have that:

\mu = 96, \sigma = 15.7

Probability that a randomly selected adult has an IQ greater than 123.4.

This is 1 subtracted by the pvalue of Z when X = 123.4. So

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

Z = \frac{123.4 - 96}{15.7}

Z = 1.745

Z = 1.745 has a pvalue of 0.9595

1 - 0.9595 = 0.0405

4.05% probability that a randomly selected adult has an IQ greater than 123.4.

7 0
3 years ago
What's the answer to 10(z-9)=-40?
sladkih [1.3K]

Answer:

z =  5

Step-by-step explanation:

Please let me know if you want me to add an explanation :)

8 0
2 years ago
Read 2 more answers
The coordinates of a quadrilateral are (1,3),(7-3),(1,-9) , and (-5,-3). What shape is formed? Select all that apply
pogonyaev
Kite. The other answers don't fit the criteria.

6 0
3 years ago
Read 2 more answers
The table shows the solution to the equation |2x − 5| − 2 = 3: Step 1 |2x − 5| = 3 + 2 Step 2 |2x − 5| = 5 Step 3 2x − 5 = 5 or
telo118 [61]
<span> |2x − 5| − 2 = 3
</span><span>1) |2x − 5|  = 3 +2
2)</span><span> |2x − 5| = 5  
3) 2x-5 = 5, or 2x-5= -5
4)2x=10, or 2x=0
5) x = 5 , or x = 0

Check:
</span> |2x − 5| − 2 = 3
 |2*5− 5| − 2 = 3 or  |2*0 − 5| − 2 = 3
|5|-2=3               or   |-5| -2 =3
3=3 (true)           or    3=3 (true)

All steps are correct.

     
3 0
3 years ago
Plot 8i in the complex plane
dusya [7]

Answer:

The coordinates of 8i on the a complex plane are

(0, 8i)

4 0
2 years ago
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