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
natita [175]
2 years ago
10

On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on

e standard deviation above the mean. Determine the mean of this test.
Mathematics
1 answer:
Zolol [24]2 years ago
6 0

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

The mean can be used to get an overall idea, or picture, of the data set.

Let Mean be 'm'

and standard deviation= \sigma

So, m-2\sigma=49

and, m + \sigma=61

Solving the above two equation we get

\sigma =4

Now, m= 61-\sigma

           = 61-4

           = 57

So , the mean of this test will be =57

Learn more about mean and standard deviation here:

brainly.com/question/16030790

#SPJ1

You might be interested in
How would I divide this?
Lorico [155]
56/1 x 11/8 here is the equations now just multiply them
4 0
3 years ago
Read 2 more answers
#1) Line j contains points (-3,5) and (6,-1). If line p is PERPENDICULAR to linej,
tia_tia [17]
First find slope of line j
(-1-5)/(6+3) = -6/9 = -2/3
Perpendicular = opposite sign and reciprocal slope

Solution: 3/2
5 0
3 years ago
This is division help me
fiasKO [112]
4.6/2= 2.3
0.84/2=0.42
0.93/3=0.31
46/2=23
84/2=42
93/3=31
8 0
3 years ago
Read 2 more answers
What function is not linear?
vlabodo [156]

Answer:

I can't get the thing to copy or put a picture down. But, I think the answer is   C. I'm not good at math. But, Lemme know if I have that one wrong!

- Martiinez ;)

5 0
3 years ago
Marcus looked out in the audience and saw 40% of the chairs were filled. There were 42 people sitting in the chairs. Enter the t
puteri [66]

Answer:

I say it is 16.8

Step-by-step explanation:

40 x 42

100

= 16.8

4 0
2 years ago
Other questions:
  • Which of the following is not a proportion 1/4=3/12 4/10=12/20 2/4=3/6 8/6=20/15
    6·2 answers
  • Describe the transformation.
    12·2 answers
  • 7(-2 - 5n) solve<br>how do you do this equation can you help me please?​
    6·1 answer
  • How many swimmers are holding exaclty 3 toy whales? ​
    9·1 answer
  • Which number line shows the solution set for |y-9| &lt;12
    8·1 answer
  • Mr. Chambliss is planning to build a shed with a rectangular floor. In his original plan, the length of the floor was 7 feet and
    13·1 answer
  • If f(x)= -5 -7x, find f(-2)
    8·1 answer
  • If FBE=72 what is fge and cd?
    15·1 answer
  • A water tank in the shape of a right cylinder has a diameter of 14 feet and a height of 18 feet. What is the volume?
    10·1 answer
  • Brandon is a high school basketball player. In a particular game, he made some two point shots and some three point shots. Brand
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!