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Troyanec [42]
3 years ago
7

In a standardized IQ test, scores are normally distributed with a mean score of 100 and a standard deviation of 15. Find the pro

bability that a randomly selected person has an IQ score higher than 125.
Mathematics
1 answer:
Zanzabum3 years ago
8 0

Answer:

0.0475

Step-by-step explanation:

First find the z-score.

z = (x − μ) / σ

z = (125 − 100) / 15

z = 1.67

Use a calculator or chart to find the probability.  Using a chart:

P(Z > 1.67) = 1 − P(Z < 1.67)

P(Z > 1.67) = 1 − 0.9525

P(Z > 1.67) = 0.0475

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GalinKa [24]

Answer:

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Step-by-step explanation:

Given

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6 0
2 years ago
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(3x²-21x-24)take out the highest common factor​
inessss [21]

Answer:

x = 8 or x = -1 is the answer

Step-by-step explanation:

3x² - 21x -24

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6 0
3 years ago
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amm1812

Answer:

Yes

Step-by-step explanation:

If we multiply them out, we get 6x + 2.4 for the first one and 6x + 2.4 for the second one, therefore they are the same.

3 0
3 years ago
Which expression represents 64
disa [49]
The answer is D. 2^6. 

Because you re basically doing:

2*2*2*2*2*2

And if you multiply all of it, it will equal 64. 

Hope this helps!
7 0
3 years ago
Reduce 2/8 to the smallest form and 3/12 to the smallest form
iris [78.8K]

Answer:

1/4 for both

Step-by-step explanation:

2/8 -- you divide 2 by 2 you get 1, 8 divided by 2 is 4 -- 1/4

3/12 -- you divide 3 by 3 you get 1, 12 divided by 3 is 4 -- 1/4

** tip: what you do to one half of the fraction you have to do to the other

hope this helps!

4 0
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