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Elza [17]
3 years ago
11

If a school had 1531 students, about how many would you expect to have an IQ greater than 145?

Mathematics
1 answer:
abruzzese [7]3 years ago
5 0

Answer:

383 students

Step-by-step explanation:

Average IQ = 115

So for IQ of 145 it's not average again.

So , 145 IQ should be 1/4 of the total number because it's no longer average .

So 1/4 of 1531 = 382.75 students approximately = 383 students

This answer is based on the assumption that average IQ is around 115.

So any one with IQ of 145 is not longer an average person concerning IQ.

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Okay, so you know that the perimeter of the pen is 28 feet. Now we need the separate side lengths.

P = 28 ft.
Length = x
Width = (1/2)x + 2

So now we can plug in the little equations of length and width into a perimeter formula:
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Distribute the 2's and solve as needed.
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To find the width, just plug in 8 for x in our little equation:
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Step-by-step explanation:

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a town has 2 fire engines operating independently . the probability that a specific engine is available when needed is 0.96. wha
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Answer:

The probability that neither is available when needed

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Step-by-step explanation:

A town has 2 fire engines operating independently

Given data  the probability that a specific engine is available when needed is 0.96.

Let A and B are the two events of two fire engines

given  P(A and B) = 0.96 ( given two engines are independent events so you have to select A and B)

Independent events : P( A n B) = P(A) P(B)

The probability that neither is available when needed

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P(A n B)^{c} = 1- 0.96 = 0.04

                                     

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