2 years ago

The product of eight and the sum of a number and nine

Mathematics

1 answer:

Crazy boy [7]2 years ago

8 0

8(n + 9) <== ur expression

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Answer: 17.89

Step-by-step explanation:

In binomial distribution, the standard deviation is given by :-

$\sigma=\sqrt{np(1-p)}$

As per given , we have

The number of vouchers in the sample with errors is denoted by x.

p= 0.20 , n = 2000

Then , $\sigma=\sqrt{2000\times(0.2)(1-0.2)}$

$\sigma=\sqrt{320}=17.88854382\approx17.89$

Hence, the standard deviation of x is 17.89.

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slamgirl [31]

Answer:

Step-by-step explanation:

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Please, see the attached files

Step-by-step explanation:

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The coefficient of determination is the first one. I'm pretty sure.

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