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Scilla [17]
3 years ago
7

The U.S. Census Bureau reports that in the year 2008, the mean household income was $68,424 and the median was $50,303. If a his

togram were constructed for the incomes of all households in the United States, would you expect it to be skewed to the right, skewed to the left, or approximately symmetric?

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0

Answer:

<u>Skewed to the Right</u>

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced problems.

Since the mean household income is  $64,424 and the median was $50,303 then the mean is larger than the median. When this occurs then the constructed histogram is always <u>Skewed to the Right</u>. This is because there are a couple of really large values that affect the mean but not the middle value of the data set.

This in term leads to the graph dipping in values the farther right you go and increasing the farther left you go, as shown in the example picture below.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

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3 years ago
A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig
Anika [276]

Answer:  (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given : Sample size = 463

\mu=118\text{ minutes}

\sigma=65\text{ minutes}

Significance level : \alpha=1-0.99=0.01

Critical value : z_{\alpha/2}=z_{0.005}=\pm2.576

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

118\ \pm\ 2.576\times\dfrac{65}{\sqrt{463}} \\\\\approx118\pm7.78=(118-7.78\ ,\ 118+7.78)=(110.22,\ 125.78)

Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

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3 years ago
Solve: 4x - 2x + 6 = x + 12 A) x = 6 B) x = 2 C) no solution D) x = −6
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Answer:

A) x = 6

Step-by-step explanation:

4x - 2x + 6 = x + 12

Combine like terms

2x +6 = x+12

Subtract 6 from each side

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The sum of 4 consecutive intergers is 50, what is the first interger in this relationship
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Answer:

x = 11

Step-by-step explanation:

Consecutive means in a row

Let x be the first integer

x+1 is the second

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x+ x+1 + x+2 + x+3 = 50

Combine like terms

4x+6 = 50

Subtract 6 from each side

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Divide each side by 4

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