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
Oksi-84 [34.3K]
2 years ago
14

3a. The average for the statistics exam was 75 and the standard deviation was 8.

Mathematics
1 answer:
hjlf2 years ago
3 0

Answer:

63

Step-by-step explanation:

The formula to when given the number of standard deviations below the mean x =μ - nσ

Where:

x = raw score

μ is the population mean = 75

σ is the population standard deviation = 8.

n = number of standard deviations below the mean

Hence

x = 75 - 1.5 × 8

x = 75 - 12

x = 63

Therefore, Andrey's exam score is 63

You might be interested in
Two lines, R and M, are represented by the following equations:
likoan [24]
Well, i'm just going to take a stab at this:

The answer out of:
> It is (18,9) ,
> It is (9, 18)
I believe both are correct as those are both plausible coordinates (although I may be wrong)

Line R: 2x + 2y = 18 (x + y = 9)
Line M: x + y = 9
There are infinite many solutions as they are the same line.
6 0
3 years ago
Transform the standard form equation into slope intercept form:15=10x-5y
arsen [322]

Answer:

10x - 5y = 15

-5y = -10x + 15

y = 2x - 3

Step-by-step explanation:

7 0
3 years ago
Please help me with this I’m not understanding please look at pic
belka [17]

Answer:

look for the missing angle

3 0
3 years ago
Read 2 more answers
Help!!! This question is confusing me!!
erica [24]

Answer:

k ≥2

Step-by-step explanation:

k+ 1/3≥7/3

Subtract 1/3 from each side

k+ 1/3-1/3≥7/3-1/3

k ≥6/3

k ≥2

8 0
3 years ago
I need help. i answered this 4 times and i cant figure it out.
Lubov Fominskaja [6]

Answer:

x=55°

Step-by-step explanation:

Add angles together and set to 180°. Solve for x.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Write the equation of the line given 2 points that it passes through<br><br> (-3,7)&amp;(-9,5)
    13·1 answer
  • A rectangular box with a square base contains 24 cubic feet. if the height of the box is 18 inches, how many feet are there in e
    5·1 answer
  • Y= 16t (squared) +120 what is t
    5·1 answer
  • The standard deviation assumes a negative value when
    12·1 answer
  • Classify the triangle shown below. Check all that apply.
    8·2 answers
  • PLZZ NEED HELP ASAPPP :((
    15·2 answers
  • Ariana has a collection of 100 coins. How many coins represent 10% of her collection?
    7·1 answer
  • I don’t understand can someone please help me
    8·1 answer
  • 1. Jonathan can run 12 laps in 15 minutes, how long would it take him to run 4 laps?
    10·1 answer
  • Find the product of (x + 5)(x - 5).<br> x2 - 10x + 25<br> x2 + 10x + 25<br> x2 - 25<br> x2 + 25
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!