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Rasek [7]
3 years ago
7

Pls help me this is my homework

Mathematics
1 answer:
Sedaia [141]3 years ago
6 0

Answer:

C) 840

C) 87

D) 3000-150n

Step-by-step explanation:

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garri49 [273]

Answer:

the answer is c

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Which of the following statements says that a number is between -5 and 5?
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will it work it you divided?

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A group of 22 students participated in a race. Their scores are below:
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The answer is

C. Histogram, because a large number of scores are reported as ranges

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What must be done to the wires used to make an electromagnet before they connect
CaHeK987 [17]

Step-by-step explanation:

To create a simple electromagnet, you'll need a source of electricity, a conductor, and metal. Wrap insulated copper wire tightly around an iron screw or nail before connecting the wire to a battery, and watch as your new electromagnet picks up small metal objects.

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3 years ago
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A researcher is studying the monthly gross incomes of drivers for a ride sharing company. (Gross incomes represent the amount pa
Reptile [31]

Answer:

The histogram of the sample incomes will follow the normal curve.

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally distributed.

In this case the researches wants to determine the monthly gross incomes of drivers for a ride sharing company.

He selects a sample of <em>n</em> = 200 drivers and ask them their monthly salary.

As the sample selected is quite large, i.e. <em>n</em> = 200 > 30, the central limit theorem can be applied to approximate the sampling distribution of sample mean by the Normal distribution.

Thus, the histogram of the sample incomes will follow the normal curve.

8 0
3 years ago
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