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mylen [45]
4 years ago
6

4.36 Stats final scores. Each year about 1500 students take the introductory statistics course at a large university. This year

scores on the final exam are distributed with a median of 74 points, a mean of 70 points, and a standard deviation of 10 points. There are no students who scored above 100 (the maximum score attainable on the final) but a few students scored below 20 points. (a) Is the distribution of scores on this final exam symmetric, right skewed, or left skewed
Mathematics
2 answers:
Nesterboy [21]4 years ago
5 0

Answer:

Step-by-step explanation:

median 74

mean 70

this is the answer

velikii [3]4 years ago
3 0

Answer:

The distribution of scores on this final exam is left-skewed.

Step-by-step explanation:

We use the Pearson Mode Skewness to solve this question. It states that:

If the median is higher than the mean, the distribution is left-skewed.

If the median is lower than the mean, the distribution is right-skewed.

If the median is the same as the mean, the distribution is symmetric.

In this problem, we have that:

Median = 74

Mean = 70

Median higher than the mean

So the distribution of scores on this final exam is left-skewed.

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Find the area of each part of the trapezoid.
Nikitich [7]

Answer:

Area of Triangle A = 4 cm²

Area of Rectangle = 24 cm²

Area of Triangle B = 4 cm²

Area of Trapezoid = 32 cm²  

Step-by-step explanation:

The formula to find the area of a triangle is: \frac{h_bb}{2}

The base (b) is 2 and the height (h) is 4.

Now multiply,

2 times 4 = 8

Then divide,

\frac{8}{2} which equals 4.

So the area of Triangle A and B is 4 cm² because they are the same triangles.

The formula to find the area of a rectangle is: a times b.

a=6 and b=4

Multiply,

6 times 4 = 24

So the area of the rectangle is 24 cm²

The formula to find the area of a trapezoid is: \frac{a+b}{2}h

A=6

B=10

H=4

So now,

\frac{6+10}{2}4

6+10=16

16 divided by 2 is 8.

Last multiply,

8 times 4 is 32.

The area of the trapezoid is 32 cm²

Hope this helped! And have a great day!

7 0
2 years ago
Which functions have a range of.. SELECT MORE THAN 1
liraira [26]

Answer:

The 3rd and the 5th

Step-by-step explanation:

The graphs of the 3rd and the 5th functions are straight lines

The 1st and 2nd are parabolas

The 4th is an exponential

You must look at the graph: it shall include all the real values for the y coordinate

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3 years ago
The population full-time equivalent number of students (FTES) at Lake Tahoe Community College for 2005-2006 through 2010-2011 wa
makkiz [27]

The mean of the set of numbers that are given in this situation regarding the population will be 1809.33.

<h3>How to solve the mean</h3>

The mean of the numbers will be:

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= 1809.33

The median of the numbers will be:

= (1735 + 1890) / 2

= 1812.50

Also, from the complete question, the first quartile will be 1690 and the third quartile is 1935.

Learn more about mean on:

brainly.com/question/20118982

8 0
3 years ago
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