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
OlgaM077 [116]
3 years ago
13

Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 579 and a standard deviation of 94. Use

the 68-95-99.7 Rule to find
the percentage of people taking the test who score between 391 and 767
The percentage of people taking the test who score between 391 and 767 is
%.
Mathematics
1 answer:
Nata [24]3 years ago
4 0

Answer:

The percentage of people taking the test who score between 391 and 767 is 95%.

Step-by-step explanation:

The Empirical Rule(68-95-99.7 Rule) states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 579

Standard deviation = 94

391 = 579 - 2*94

So 391 is two standard deviations below the mean.

767 = 579 + 2*94

So 767 is two standard deviations above the mean.

By the Empirical Rule:

The percentage of people taking the test who score between 391 and 767 is 95%.

You might be interested in
Solve the following expression and state the operation used in each step. Show all of your work 5+9-3^2+2​
Pepsi [2]
Answer: 7


5+9-3^2+2
= 14-3^2+2
= 14-9+2
= 5+2
= 7
8 0
3 years ago
1/5 (4-3x) = 1/7 (3x - 4)<br><br> pls solve it pls pls
8_murik_8 [283]

Answer:

x=4/3

Step-by-step explanation:

In pic

(hope this helps can I pls have brainlist (crown)☺️)

4 0
3 years ago
Read 2 more answers
The figure represents a traffic island that has angles measuring 60°, 20°, and 100°. Enter each angle next to its correct measur
suter [353]

Answer:

possblie awnser is 1:Possible answer for Triangle 1: m∠A = 70°; m∠B = ∠55°; m∠C = 55°.

The compass marks equal lengths on both sides of ∠A; therefore, AB

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Circle the expressions that represent 10% of the original cost
Anni [7]

Answer:

What are the choices?

Step-by-step explanation:


5 0
3 years ago
If y=6 when x=10 find x when y=18 equation
egoroff_w [7]
I believe x would equal to 30.

Since 6 * 3 =18, 10 * 3 = 30.
What you do to one side, you must do to the other.

Hope I helped!

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which inverse operations could you use to solve the equation(m/5)- 8= -6
    8·2 answers
  • What is the circumference of the circle
    6·2 answers
  • which of the following represents the area of a rectangle whose length is x-6 and whose width is x-8?
    15·1 answer
  • 3x-10+5m+6x+7 identify the parts of the following expressions
    5·1 answer
  • Lexie is making a model of the Empire State Building. The scale of the model is 1 inch = 9 feet. The needle at the top is 31.5 f
    14·2 answers
  • Which equation best represents Fallon's earnings in terms of Donald's earnings?
    9·1 answer
  • This is overdue and I can’t figure it out. Plz help
    5·1 answer
  • 3(-5+2x) =21, 15 + 2x=21 is this distributed right?
    11·1 answer
  • Help please help me
    13·1 answer
  • A circle with radius of 2 cm sits inside a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!