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charle [14.2K]
3 years ago
15

We gave a national verbal proficiency test that has a mean score of 500 with a standard deviation of 75. What raw score would co

rrespond to the 60th percentile
Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

519

Step-by-step explanation:

Let's assume that the scores for the national verbal proficiency test follow a normal distribution.

Mean score (μ) = 500

Standard deviation (σ) = 75

According to a Z-score table, the score for the 60th percentile is roughly z = 0.253

For any score "x", the z-score is given by:

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

For z = 2.53:

0.253=\frac{X-500}{75}\\X=519

The raw score to the 60th percentile is 519.

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Step-by-step explanation:

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Right answer gets brainlyest
lyudmila [28]

Answer:

\frac{2}{3} (x+6)

Step-by-step explanation:

\frac{2}{3} x+4= \frac{2}{3} (x+4÷\frac{2}{3})

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3 0
2 years ago
Jerry scored 581 points by collecting 7 coins. In all, how many coins does Jerry have to collect to score a total of 996 points?
charle [14.2K]

Answer:

12 coins

Step-by-step explanation:

Points scored by collecting 7 coins = 581

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Let Number of coins = c

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c coins = 996 points

Cross multiply :

581 * c = 996 * 7

581c = 6972

Divide both sides by 581

581c / 581 = 6972 / 581

c = 12

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4 0
2 years ago
morgan poured 9/10 liter of punch into each of 6 bottles how many liters of punch did she pour in all
drek231 [11]

Answer:

5 and 2/5 liters     or          5.4 liters

Step-by-step explanation:

9/10 times 6

9 times 6 is 54. 54 divided by 10 is 5.4 which is the same as 5 and 2/5

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3 years ago
Solve The Following System of equations by graphing<br><br>3x + y = 5<br>x - 4y = 32​
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first you convert to slope intercept form

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then you graph

(starting with the y-intercepts as your first points)

the point where the two lines intercept is your solution.

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3 years ago
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