2 years ago

How many hours is 10 miles?

Mathematics

1 answer:

Aleksandr-060686 [28]2 years ago

7 0

Depends on the speed

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Nookie1986 [14]

I think 180 that should be your answer sorry i did not get here quick enough

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alexandr402 [8]

Answer:

16 is H.9

17. is A.9

Step-by-step explanation:

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2 years ago

What is the solution set for 6x−9=15, given the replacement set {0, 1, 2, 3, 4}?

vfiekz [6]

6x-9=15
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Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

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For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

Sample size required, n

$n=\left (\frac{z_{\frac{\alpha}{2}}\cdot \sigma}{E} \right )^{2}=\left (\frac{1.96\cdot4}{75/60} \right )^{2}=39.337984$

Rounding off, n=40

Sample size =40

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95% confidence, sample size, Wall Street Journal

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3 years ago

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Vadim26 [7]

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Step-by-step explanation:

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