3 years ago

A horse fills a hot tub at a rate of 3.54 gallons per minute. How many hours will it take to fill a 258 gallon hot tube

1 answer:

7 0

Approximately 1.22 hours.
258/3.54≈72.9. 72.9/60≈1.22.

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Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

$n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }$

Where E is the error that we are prepared to accept, in this case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

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3 years ago