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Dafna1 [17]
3 years ago
10

A 500-gallon water tank drains at a rate of 50 gallons per minute. The amount of water left in the tank depends on the number of

minutes it has been draining. What is the range of this relation?
Mathematics
2 answers:
lidiya [134]3 years ago
7 0

Answer:

The answer is 0 ≤ y ≤ 500

Step-by-step explanation:

The amount of water left in the tank depends on the number of minutes it’s been draining, so the dependent variable is the amount of water left in the tank. The range represents all possible values of the dependent variable. Because the minimum amount of water in the tank is 0 gallons and the maximum amount of water is 500 gallons.

ryzh [129]3 years ago
6 0

I think youlll addd them

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Step-by-step explanation:

Let p be the proportion of people who leave one space after a period.

Given:  Sample size : n= 525

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i.e. sample proportion: \hat{p}=\dfrac{440}{525}\approx0.838

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Formula to find the confidence interval :

\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

0.838\pm (1.645)\sqrt{\dfrac{0.838(1-0.838)}{525}}\\\\=0.838\pm (1.645)\sqrt{0.00025858285}\\\\=0.838\pm (1.645)(0.01608)\\\\= 0.838\pm0.0265\\\\=(0.838-0.0265,\ 0.838+0.0265)\\\\=(0.8115,\ 0.8645)

Hence, a 90% confidence interval for the proportion of people who leave one space after a period: (0.8115, 0.8645)

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Step-by-step explanation:

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