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
23j-21g+20e-13+52e-37j+45-49e<br> (Like terms)
eduard

The solution to the algebraic expression is: 23e - 21g - 14j + 32

What are algebraic expressions?

Algebraic expressions are mathematical expressions that contain variables, coefficients, and arithmetic operations such as addition, subtraction, division, and multiplication.

Solving algebraic expressions are an important part of mathematics as it helps to improve the aptitude and solving skills of the students.

From the given information, we have;

23j - 21g + 20e - 13 + 52e - 37j + 45 - 49e

let's rearrange by taking the like terms to the same sides;

= 23j -37j - 21g + 20e + 52e - 49e - 13 + 45

= -14j - 21g + 23e + 32

= 23e - 21g - 14j + 32

Therefore, we can conclude that the solution to the algebraic expression is: 23e - 21g - 14j + 32

Learn more about solving algebraic expressions here:

brainly.com/question/4344214

#SPJ1

3 0
1 year ago
Question 15 I mark as brainliest ​
Nesterboy [21]
If imma be honest I don’t understand that
7 0
3 years ago
write the equation in slope-intercept form of the line that has a slope of 2 and contains the point (3,7)
mario62 [17]
Slope intercept form is y=mx+b

y= m or 2 because that is your slope but now all you need to is find your begin or find the point (3,7) on the graph.                
8 0
3 years ago
27.) FEMALE LAWYERS There are 1,094,751 active lawyers living
SOVA2 [1]

Answer:

28.6%; 313,099

Step-by-step explanation:

Lawyers are either male or female, so if 71.4% are male, then 100% minus that are female.

100% - 71.4% = 28.6%

28.6% of 1,094,751 is:

0.286 × 1094751 = 313098.786

Rounded to the nearest whole number, there are 313,099 female lawyers.

5 0
3 years ago
4x^2=27x+40<br> Solve by factoring
worty [1.4K]

Answer: hewo, there! your answer is below

x= -5/4

or x= 8

Step-by-step explanation:

step 1: Subtract 27x+40 from both sides.

4x2−(27x+40)=27x+40−(27x+40)

4x2−27x−40=0

Step 2: Factor left side of equation.

(4x+5)(x−8)=0

Step 3: Set factors equal to 0.

4x+5=0 or x−8=0

hope this helps you

have a great Day

Plz makr branilest

8 0
2 years ago
Other questions:
  • Graph each equation by making a table. y = 4
    11·1 answer
  • Find 3 consecutive even numbers that add up to 666.
    11·2 answers
  • Question 1:
    6·2 answers
  • If m∠1 = 3x, m∠3 = 2x + 20 and m∠5 = 30, what is the value of x?
    8·1 answer
  • Radical and exponents
    11·1 answer
  • Rational expressions always contain logarithms. 1) Always true 2) Never true 3) Sometimes true
    6·1 answer
  • I don’t understand this question what so ever
    15·1 answer
  • 4m-5t=-22<br> 5m+6t=-3<br><br> Solve by Elimination
    8·1 answer
  • Z1 and Z2 are complementary. The mZ1 = 25°. What is the mZ2?​
    9·1 answer
  • The graph of the cube root parent function y = RootIndex 3 StartRoot x EndRoot is translated to form f(x) shown on the graph.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!