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Mathematics 15 Online
zarkam21:

Help on this question

zarkam21:

@Vocaloid

zarkam21:

1 attachment
ThisGirlPretty:

@Vocaloid Help love ):

Vocaloid:

calculate the z-score for 140 IQ (140-mean)/standard deviation = ?

Vocaloid:

still there?

zarkam21:

I am here now

zarkam21:

3.08????

Vocaloid:

good now let's calculate the percentile for z = 3.08 (for simplicity I will use a z-score calculator)

Vocaloid:

https://www.zscorecalculator.com/

Vocaloid:

I get about 0.11% now calculate 0.11% of the original population

Vocaloid:

(0.11/100)*6575000000

Vocaloid:

=?

Vocaloid:

still there?

zarkam21:

Yes I am

zarkam21:

7232500

zarkam21:

So the answer would be a?

Vocaloid:

good yes

zarkam21:

Thanks so much I really do appreciate your help. you actually explain everything to me.

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