2 years ago

N + 7 ------- = 2 13

1 answer:

7 0

Answer:

Step-by-step explanation:

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Neporo4naja [7]

Answer:ty

Step-by-step explanation:

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4 years ago

ANEK [815]

Answer: 20

Step-by-step explanation:

Formula to find the minimum sample size(n) when prior population standard deviation $(\sigma)$ is known.

$n=(\dfrac{z^c\times\sigma}{E})^2$ , where E = Margin of error , $z^c$ = Critical z-value for c confidence interval.

Given : E = 225 g , $\sigma=600$ g

Critical z value for 90% confidence = 1.645

Now, $n=(\dfrac{1.645\times600}{225})^2$

$n=(\dfrac{987}{225})^2$

$n=(4.38666666667)^2=19.2428444\approx20$

Hence, the required minimum sample size = 20

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3 years ago

Orlov [11]

Answer:

-2

Step-by-step explanation:

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4 years ago

levacccp [35]

The answer to this question would be C, 9. The reason for is cause you remove the parentheses then add the numbers 1.2 + 7.8=9.

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3 years ago

hodyreva [135]

58k+111=6612 k=112.086

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3 years ago