3 years ago

Two coins are knocked off a table at the same time by different forces. which coin will hit the ground first?

1 answer:

3 0

They will land at the same time

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anygoal [31]

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kykrilka [37]

Answer:

2/7

Step-by-step explanation:

You would add what is in the parenthesees and you get 6/14 and if you simplify you get 3/7. So you would do 5/7 -3/7

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Alborosie

Answer:

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dedylja [7]

4(51)-6
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3 years ago

SpyIntel [72]

Answer: 1308

Step-by-step explanation:

Given : Level of confidence = 0.97

Significance level : $\alpha=1-0.97=0.03$

Critical value : $z_{\alpha/2}=2.17$

Margin of error : $E=0.03$

If prior proportion of population is unknown , then the formula to find the population proportion is given by :-

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

$\Rightarrow n=0.25(\dfrac{2.17}{0.03})^2=1308.02777778\approx1308$

Hence, the minimum sample size needed =1308

6 0

3 years ago