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3 years ago

Wesley scored the following points in basketball games this season. 12,14,3,20,4,6,12,15,17,0 what is his range of scores?

2 answers:

5 0

To find range, you must find the largest number in your data, and subtract it by the smallest number in your data.

In this case...
the Largest (20) - smallest (0) = Range

antiseptic1488 [7]3 years ago

4 0

20, range is low from the high so 20-0 is still 20

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Suppose that you were not given the sample mean and sample standard deviation and instead you were given a list of data for the

Troyanec [42]

Answer:

So, the sample mean is 31.3.

So, the sample standard deviation is 6.98.

Step-by-step explanation:

We have a list of data for the speeds (in miles per hour) of the 20 vehicles. So, N=20.

We calculate the sample mean :

$\mu=\frac{19 +19 +22 +24 +25 +27 +28+ 37 +35 +30+ 37+ 36+ 39+ 40+ 43+ 30+ 31+ 36+ 33+ 35}{20}\\\\\mu=\frac{626}{20}\\\\\mu=31.3$

So, the sample mean is 31.3.

We use the formula for a sample standard deviation:

$\sigma=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}(x_i-\mu)^2}$

Now, we calculate the sum

$\sum_{i=1}^{20}(x_i-31.3)^2=(19-31.3)^2+(19-31.3)^2+(22-31.3)^2+(24-31.3)^2+(25-31.3)^2+(27-31.3)^2+(28-31.3)^2+(37-31.3)^2+(35-31.3)^2+(30-31.3)^2+(37-31.3)^2+(36-31.3)^2+(39-31.3)^2+(40-31.3)^2+(43-31.3)^2+(30-31.3)^2+(31-31.3)^2+(36-31.3)^2+(33-31.3)^2+(35-31.3)^2\\\\\sum_{i=1}^{20}(x_i-31.3})^2=926.2\\$

Therefore, we get

$\sigma=\sqrt{\frac{1}{N-1}\sum_{i=1}^{N}(x_i-\mu)^2}\\\\\sigma=\sqrt{\frac{1}{19}\cdot926.2}\\\\\sigma=6.98$

So, the sample standard deviation is 6.98.

3 0

3 years ago

Please help im really confused Which expression is equivalent to 4(7 + 8)?

Hatshy [7]

Answer:

With the answer choices:

A. 11 + 8

B. 11 + 12

C. 28 + 12

D. 28 + 32

The answer would be 28+32.

Step-by-step explanation:

Use the distributive law.

4 * 7 = 28

4 * 8 = 32

Hope this helps!

8 0

3 years ago

What is the residual value when x = 4? -6.72 -0.58 0.58 6.72

madreJ [45]

Answer:

Brainliest

Step-by-step explanation:

y=2.78(4)-4.4 = 6.72

5 0

4 years ago

A lady walks into a cafe. She order four items. a coffe for 3.28, a bagel for 1.27, a juice for 0.56 and a muffin for 2.33. How

malfutka [58]

She spent $7.44 because 3.28 + 1.27 + 0.56 + 2.33 = 7.44

7 0

2 years ago

I don’t understand how to do 8. , 9. , and 10.

kenny6666 [7]

Answer:

11 12 13 14 15 16 17 18 19 20 21 22

7 0

2 years ago