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Hitman42 [59]
2 years ago
8

The superintendent of a large school district wants to estimate the percent of district residents who support the building of a

new middle school. To gather data, the superintendent will select a random sample of district residents.Which of the following is the most appropriate method for creating such an estimate? *
A one-sample z -interval for a sample proportion
A two-sample z -interval for a difference between population proportions
A two-sample z -interval for a population proportion
A one-sample z -interval for a difference between population proportions
A one-sample z -interval for a population proportion
Mathematics
1 answer:
Allushta [10]2 years ago
7 0

According to the hypothesis test, the option that gives the most appropriate method for creating such an estimate is:

A one-sample z-interval for a population proportion.

<h3>What is the hypothesis test?</h3>

He will test if there is enough support to build a new middle school, that is, if the population proportion that supports the building of a new middle school is greater than a threshold.

Only one sample is taken from the district residents, hence the correct option is:

A one-sample z-interval for a population proportion.

You can learn more about hypothesis tests at brainly.com/question/26454209

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polet [3.4K]

The first car consumed 25 gallons of fuel while the second car consumed 30 gallons of fuel.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the first car consumption and y represent the second car consumption, hence:

x + y = 55   (1)

Also:

15x + 20y = 975   (2)

From both equations:

x = 25, y = 30

The first car consumed 25 gallons of fuel while the second car consumed 30 gallons of fuel.

Find out more on equation at: brainly.com/question/2972832

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4 0
1 year ago
A spherical block of ice melts so that its surface area decreases at a constant rate: ds/dt = - 8 pi cm^2/s. calculate how fast
sveticcg [70]
The rate a which the surface area, S, decreases is
\frac{dS}{dt} =-8 \pi \, cm^{2}/s

The surface area is
S = 4πr²
where r =  the radius at time t.

Therefore
\frac{dS}{dt} = \frac{dS}{dr}  \frac{dr}{dt} =8 \pi r  \frac{dr}{dt} \\\\ -8 \pi  = 8 \pi r  \frac{dr}{dt} \\\\  \frac{dr}{dt} =- \frac{1}{r}

When r = 3 cm, obtain
\frac{dr}{dt}]_{r=3} = - \frac{1}{3} \, cm/s

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I need help in this question please !​
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The answer would be 100/101 if we follow according to the rule on which the sequence is based on!
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Blizzard [7]

Answer:

I hope this helps :)

Step-by-step explanation:

- Least:  -3

-  -2.5

-  -3/4

-  -3/8

-  1/4

-  3.1

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