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3 years ago

13

I need help uwu (please show your work and provide explanations)

1 answer:

Ivan3 years ago

6 0

A. The ratio in this case is for every 40 minutes : one foot of water is leaked. If we start at 12 pm : 5 foot, next 12:40 pm : 4 foot, then 1 pm would have 3.5 feet. This is because for every 40 minutes is what caused one foot to leak but since we are at 12:40 adding 40 minutes would get us to 1:20 pm, not 1 pm. That means 20 minutes passed, half the time of 40 minutes meaning half the amount of one foot.

B. H(t) would be 40(1).

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<u>Explanation:</u>

The formula for variance is:

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Now let's find $\sum(x-\bar{x})^{2}$ , please have a look at the attached picture:

$\therefore Variance = \frac{140}{16}=8.75$

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