1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liraira [26]
2 years ago
10

"if the standard deviation of a group of 20 scores is 15, what is the variance?"

Mathematics
1 answer:
DerKrebs [107]2 years ago
7 0

We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.

Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.

\text{ Variance}=\sigma^{2}\\
=15^{2}=225

Therefore, our variance is 225.


You might be interested in
2. f(x): 4.2х8<br> F(x)=x4-2x^2-8
Musya8 [376]
I need more information to answer this question. Please provide more
4 0
3 years ago
Choose Yes or No to tell if the number 3 will make each equation true. 2 ÷ □ = 3 2 Choose... 2 ÷ 6 = □ Choose... 2 ÷ □ = 2 3 Cho
pashok25 [27]
4. Normal body temperature is 98.6 degrees Fahrenheit, although it varies slightly for some people.
3 0
3 years ago
How do you solve 4(4+363562-75635)(4)/53
Mice21 [21]

Simple, use PEMDAS and then do your simple  math and then your answer should be 86922.56604

4 0
2 years ago
Jess wants to measure how much water she uses in the shower each morning. She finds
forsale [732]

Answer:

32 gallons of water

Step-by-step explanation:

8 minutes = 480 seconds.

set up a proportion:

1/15=x/480

we have to solve for x:

15x=480

x=32.

Jess uses 32 gallons of water.

6 0
3 years ago
Read 2 more answers
How do you tell if it's possible to make a triangle out of these side lengths?<br> PLZ HELP!!!!!
Nastasia [14]

Answer:

A

Step-by-step explanation:

square root of 73 is about 8.5

square root of 10 is about 3. multiply by 3, you get 9.

square root of 7 is about 2.6. multiply by 5, you get 13.

when determining if you can make a triangle, if all variants of two sides can add up to be greater than the third side, you can make the triangle. so 8.5+9 > 13; 13+9 > 8.5; 13+8.5 > 9. this means it can make a triangle and all you have to do is order the sides.

8.5 is smallest which corresponds to angle c because it's opposite. 9 goes to angle a, then finally 13 goes to angle b. thus, angles c, a, b is the order.

side note: the smallest side length will always correspond with the smallest angle.

hope this helps :)

3 0
3 years ago
Other questions:
  • How do you find the length of a sign segment
    5·1 answer
  • Please answer my question now in two minutes
    14·1 answer
  • HELP ME DO A STATEMENT REASON FOR THIS PLEASE
    7·1 answer
  • The graph below represents which system of inequalities? graph of two infinite lines that intersect at a point. One line is soli
    11·1 answer
  • Find the value of x for which ℓ ∥ m.
    7·1 answer
  • Name the property shown by the statement.<br> 2 + 5 = 7
    6·1 answer
  • The sum of two numbers is 14. The larger number minus three times the lesser number is -2. What is the lesser number?
    11·1 answer
  • The height of an apple
    5·2 answers
  • Find the product pleeeaaassse... Im dead<br> (3x+5)(3x+6)
    5·2 answers
  • Sarah brought a box of salt water taffy with 25 vanilla and 25 strawberry flavored pieces . What is the number of the possible o
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!