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Whitepunk [10]
3 years ago
14

The scores on a test are normally distributed with a mean of 19 and a standard deviation of 5

Mathematics
1 answer:
kiruha [24]3 years ago
3 0

Answer:

24.18 is the required score to get into the top 15%.

26.03 is required to get into the 92nd percentile.

Step-by-step explanation:

On a TI-84 calculator:

You can use the invNorm function to calculate the point at a given percentage on a normal model

invNorm(area, mean, sd, tail)

Plug in the values and calculate:

invNorm(0.15, 19, 5, RIGHT)

24.18 is the required score to get into the top 15%.

92nd percentile means that this score is better than 92% of scores

Plug in values and calculate:

invNorm(0.92, 19, 5, LEFT)

26.03 is required to get into the 92nd percentile.

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vesna_86 [32]

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B

Step-by-step explanation:

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3 years ago
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-5 3/4 - 3 1/2 =?<br><br> A -2 1/4 <br> B 2 1/4 <br> C -9 1/4 <br> D -8 2/3
kenny6666 [7]
- 3 1/2 can be rewritten as - 3 2/4

New equation will make it easier to combine like terms:

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3 years ago
Complete the area model representing the polynomial x2-11x+28 what is the factored form of the polynomial use the model to rewri
Tpy6a [65]

Answer:

The factored form of the polynomial use the model to rewrite the expression is (X-7)(X-4)

Step-by-step explanation:

given the polynomial x^{2}-11x+28

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b: -11

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