2 years ago

What is 25/30 in simplest form

Mathematics

1 answer:

Ira Lisetskai [31]2 years ago

4 0

25/30 is equal to 5/6.

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You need four squares.

On the top left square, you put the number 20 over it, and the number 30 to it's left. Put the number 600 in the square.

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Step-by-step explanation:

Given that p = 20% = 0.2, n = 300.

The mean (μ) = np = 0.2 * 300 = 60

The standard deviation (σ) = $\sqrt{np(1-p)}=\sqrt{300*0.2(1-0.2)}=6.93$

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma }$

For x = 57:

$z=\frac{57-60}{6.93 } =-0.43$

For x = 62:

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2 years ago