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Alexandra [31]
3 years ago
5

Yuri computes the mean and standard deviation for the sample data set 12, 14, 9, and 21. he finds the mean is 14. his steps for

finding the standard deviation are below. what is the first error he made in computing the standard deviation

Mathematics
1 answer:
german3 years ago
8 0
The complete question in the attached figure N 1

we know that
The formula for Sample Standard Deviation is indicated in the attached figure N2
n in this problem is 4 <span>and Yuri had to divide in the formula by 3  </span>

therefore

the answer is
 Yuri divided by n instead of n -1

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IceJOKER [234]

Answer:

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Step-by-step explanation:

12

5 0
3 years ago
The volume of a cone is represented by the formula V = 1 T?n. If the volume of a cone is 30rt and the height is 2.5, what is the
Airida [17]

Answer:

radius is 3.38cm

Step-by-step explanation:

Note: the volume of a cone is given as

V= 1/3 \pi r^2 h

Step one:

Given Information

volume= 30cm^3

height= 2.5cm

Required

The radius of the cone

Step two:

substituting our data into the expression for the volume of a cone we can then solve for the radius r

30=1/3 *3.142*r^2 * 2.5\\\\30=1/3*7.855r^2\\\\30=2.62r^2\\\\

divide both sides by 2.62

30/2.62= r^2\\\\11.45= r^2\\\\r=\sqrt{11.45} \\\\r=3.38cm

7 0
2 years ago
Please help on this. I am confused.
neonofarm [45]
The answer is 2x^2-3x-2.

To solve this, you take f(x)-g(x) which is 2x^2-5-3x+3. This simplifies to 2x^2-3x-2.
3 0
3 years ago
Can you please tell me the table of 12?
zloy xaker [14]

Answer:

you have the table of the 12in the photo

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please help. I dont understand
Gennadij [26K]

Answer: try b  

Step-by-step explanation:

glad i could help!

8 0
2 years ago
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