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2 years ago

The scores on a certain standardized test follow a normal distribution. The mean score is 76, and the standard deviation is 8.

Mathematics

1 answer:

Inessa [10]2 years ago

3 0

About 4.01% of the test scores in the normal distribution that are greater than 90

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more number and variables.

Z score is given by:

z = (raw score - mean) / standard deviation

Given that mean score is 76, and the standard deviation is 8.

For x > 90:

z = (90 - 76) / 8 = 1.75

P(z > 1.75) = 1 - P(z < 1.75) = 1 - 0.9599 = 0.0401

About 4.01% of the test scores in the normal distribution that are greater than 90

Find out more on equation at: brainly.com/question/2972832

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kiruha [24]

Answer:

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Part B) $\$55,250$

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Part A) Express the value of the bulldozer, V, as a function of how many years old it is, t.

Let

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t ----> the number of years (independent variable or input value)

we know that

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$b=\$101,250$

substitute

$V(t)=-5,750t+101,250$

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For t=8 years

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zheka24 [161]

Cylinder Volume

Level : JHS

V = hπr²

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