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2 years ago

HelpI need this answer A.S.A.P.

Mathematics

1 answer:

kiruha [24]2 years ago

4 0

Answer:

i think its 31

Step-by-step explanation:

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Nombra el conjunto de números reales.

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Answer:

Los números reales incluyen todos los números racionales, como el entero −5 y la fracción 4/3, y todos los números irracionales, como √2 (1.41421356 ..., la raíz cuadrada de 2, un número algebraico irracional).

Step-by-step explanation:

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3 years ago

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Which expression is equivalent to

lapo4ka [179]

The last one
2j^2/3k^4

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2 years ago

The graph below represents which system of inequalities?

Sav [38]

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the second one pretty sure

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3 years ago

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How many times does 6 go into 110

juin [17]

6 goes into 110 approximately 18 times.

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3 years ago

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Scores on a test are normally distributed with a mean of 81.2 and a standard deviation of 3.6. What is the probability of a rand

Misha Larkins [42]

Answer:

The probability of a randomly selected student scoring in between 77.6 and 88.4 is 0.8185.

Solution:

Given, Scores on a test are normally distributed with a mean of 81.2

And a standard deviation of 3.6.

We have to find What is the probability of a randomly selected student scoring between 77.6 and 88.4?

For that we are going to subtract probability of getting more than 88.4 from probability of getting more than 77.6

Now probability of getting more than 88.4 = 1 - area of z – score of 88.4

$\mathrm{Now}, \mathrm{z}-\mathrm{score}=\frac{88.4-\mathrm{mean}}{\text {standard deviation}}=\frac{88.4-81.2}{3.6}=\frac{7.2}{3.6}=2$

So, probability of getting more than 88.4 = 1 – area of z- score(2)

= 1 – 0.9772 [using z table values]

= 0.0228.

Now probability of getting more than 77.6 = 1 - area of z – score of 77.6

$\mathrm{Now}, \mathrm{z}-\text { score }=\frac{77.6-\text { mean }}{\text { standard deviation }}=\frac{77.6-81.2}{3.6}=\frac{-3.6}{3.6}=-1$

So, probability of getting more than 77.6 = 1 – area of z- score(-1)

= 1 – 0.1587 [Using z table values]

= 0.8413

Now, probability of getting in between 77.6 and 88.4 = 0.8413 – 0.0228 = 0.8185

Hence, the probability of a randomly selected student getting in between 77.6 and 88.4 is 0.8185.

4 0

3 years ago

HelpI need this answer A.S.A.P. ​

HelpI need this answer A.S.A.P.