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
GrogVix [38]
3 years ago
9

A set of mathematics exam scores are normally distributed with a mean of 80.280.280, point, 2 points and a standard deviation of

444 points. What proportion of exam scores are between 828282 and 85.685.685, point, 6 points? You may round your answer to four decimal places.

Mathematics
2 answers:
hichkok12 [17]3 years ago
5 0

Answer:

0.3745

Step-by-step explanation:

Data

mean (\mu): 80

standard deviation (\sigma): 4

Normal distribution table is in figure attached .

Z = \frac{x - \mu}{\sigma
}

Z = (85 - 80)/4 = 1.25

Area below curve = 0.3944

Z = (82 - 80)/4 = 0.5

Area below curve = 0.0199

Proportion of exam scores between 82 and 85?

0.3944 - 0.0199 = 0.3745

Gekata [30.6K]3 years ago
3 0

Answer: 0.3330 is right

Step-by-step explanation:

You might be interested in
So what's the answer for 35% of 22
kondor19780726 [428]
You divide 22 by 10 (2.2) and then multiply that by 3 to get 30%, which is 6.6. Then, you divide 2.2 by 2 to get 1.1, which is 5%. After this you just add them up to get the answer as 7.7.
Also, if you have q calculator, you can do it the short way and do 22 × 0.35 = 7.7
8 0
3 years ago
Read 2 more answers
Choose the correct term that makes the sentence true. The (greatest) (or) (least) of the common factors of two or more numbers i
stiv31 [10]
the greatest is 10 and the least is one but I don't know for sure but I don't know if that what you looking for
5 0
3 years ago
One cube has a volume of 192 cm3, and another has a volume of 375 cm3. How much longer is the edge of the larger cube than that
vesna_86 [32]

Answer:

134

Step-by-step explanation:

5 0
3 years ago
Help solving question 5 please.
Rasek [7]

Answer:

Step-by-step explanation:

6 0
3 years ago
Two friends Vicky and Micky start a business together. They decided to share their capitals depending up on the variable expendi
elixir [45]

Answer:

a- x = 5/3, or x = -7/2

b- 675

c - 5·x + 2

Step-by-step explanation:

The polynomial representing the capital of the two partners = 6·x² + 11·x - 35

a. The total share is the capital of the two partners together = 6·x² + 11·x - 35

∴ When their total share is equal to 0, we have;

6·x² + 11·x - 35 = 0

Factorizing the above equation with a graphing calculator gives;

(3·x - 5)·(2·x + 7)

Therefore;

x = 5/3, or x = -7/2

b- The total expenditure, when x = 10 is given by substituting the value of <em>x </em>in the polynomial 6·x² + 11·x - 35, as follows;

When x = 10

6·x² + 11·x - 35 = 6 × 10² + 11 × 10 - 35 = 675

The total expenditure of Vicky and Micky when x = 10 is 675

c - The sum of their expenditure is (3·x - 5) + (2·x + 7) = 5·x + 2

7 0
3 years ago
Other questions:
  • Round 18.79 to the underlined place. A. 18 B. 17 C. 20 D. 29
    8·1 answer
  • 4(3x + 3) = 3(5x + 0.5)<br> What is the value of x?
    14·2 answers
  • Which equation is an identity?
    12·1 answer
  • Answer this question pls
    5·1 answer
  • What are 3 integers of 54
    13·2 answers
  • Need help with this equation having troubles<br> 4(20 + 12) ÷ (4 - 3)
    10·2 answers
  • Terrell's mom paid $27 for 18 juice boxes for the party. at that rate, how much would she pay for 24 juice boxes?
    12·1 answer
  • Mr. Jackson has a total of 12 employees. He wants to buy each employee 3 aprons that will cost $7.79 each, 1 cap that will cost
    9·2 answers
  • How do I find the Q1 and Q3?<br><br> 0,0,1,2,2,3,4,4,4,4,5,6,6,7,7
    5·1 answer
  • Which expression means the same as "the quotient of 8 less than x and 4"?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!