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
Veronika [31]
2 years ago
9

A normally distributed data set has a mean of 0 and a standard deviation of 2. Which of the following is closest to the percent

of values between -4.0 and 2.0?
please help will give brainlist!!!

Mathematics
1 answer:
frutty [35]2 years ago
4 0

A normally distributed data set has a mean of 0 and a standard deviation of 2. The closest to the percent of values between -4.0 and 2.0 would be 84%.

<h3>What is the empirical rule?</h3>

According to the empirical rule, also known as the 68-95-99.7 rule, the percentage of values that lie within an interval with 68%, 95%, and 99.7% of the values lies within one, two, or three standard deviations of the mean of the distribution.

P(\mu - \sigma < X < \mu + \sigma)  \approx 68\%\\P(\mu - 2\sigma < X < \mu + 2\sigma)  \approx 95\%\\P(\mu - 3\sigma < X < \mu + 3\sigma)  \approx 99.7\%

A normally distributed data set has a mean of 0 and a standard deviation of 2.

Z=(x-\mu)/\sigma

P(x=-0.4)\\\\z=(-0.4-0)/2\\\\= -0.2\\\\P(x=2)\\z=(2-0)/2\\\\=1

P(-0.4 < x < 2)=p(-0.2 < z < 1)=p(-0.2 < z < 0)+p(0 < z < 1)……….(by symmetry)

=.49865+.3413

.83995…….(by (http://83995…….by) table value)

=.8400 × 100

=84%

Learn more about the empirical rule here:

brainly.com/question/13676793

#SPJ2

You might be interested in
Any large random sample from a group of people will be representative of the entire group.
Grace [21]
False.

In a random sample each member of the group has the same chances to be choosen. A representative sample replicates the characteristcs that you want of the group. Many times you need to make the sampling not random to pick a sample that represents or replicates the group.
6 0
3 years ago
Y is between X and Z on a line. XZ = 15 and XY = 10. What is the length of YZ?
Mariulka [41]

Answer:

5

Step-by-step explanation:

if xz is 15 and xy is 10 then we can infer that z is 10 and x is 5

3 0
3 years ago
during one week an automobile manufacturing plant produced 4837 luxury cars 8952 vans and 848 station wagons how many vehicles d
OlgaM077 [116]

Answer:

14637

Step-by-step explanation:

8952

+

4837

+

0848

=

00007

00030

006

04

1

5 0
3 years ago
Tomas learned that the product of the polynomials (a + b)(a2 – ab + b2) was a special pattern that would result in a sum of cube
lana66690 [7]
<span>if a = 2x and b = 1

(2x)</span>³+1³ = (2x+1)(4x²-2x+1)

I hope this helps
6 0
3 years ago
Read 2 more answers
There are many cylinders with a height of 9 inches. Let R represent the radius in inches and V represent the volume in cubic inc
PtichkaEL [24]

Answer:

R V

1  9π in³ 

2  36π in³

3  81π in³

Step-by-step explanation:

For, r = 1

V = π(1)²9 = 9π in³

For, r = 2

V = π(2)²9 = 4*9π in³ = 36π in³

For r = 3

V = π(3)²9 = 9*9π in³ = 81π in

R V

1  9π in³ 

2  36π in³

3  81π in³

6 0
3 years ago
Other questions:
  • Write a rule for the nth term of the geometric sequence if r=1/4 and a<br> =6
    15·1 answer
  • What is square footage of 83"x 68"?
    7·1 answer
  • Write the quadratic equation in standard form:
    8·1 answer
  • If there are always 2 red sections, how does the number of total sections in the spinner relate to the theoretical probability o
    15·1 answer
  • Find the missing power in the following calculation:108/9 · 10? = 10
    11·1 answer
  • Mrs. Sahd distributes pencils and papers to students in the ratio of 2 pencils to 10 sheets of paper. Three of these ratios are
    15·1 answer
  • How much interest does a $482 investment earn at 5% over three years
    10·1 answer
  • What is the volume of the cylinder?
    10·1 answer
  • On average, Delores takes about 4 more minutes to walk home than to bike home. We CANNOT express this value as a multiple of the
    13·1 answer
  • 3. A soccer player heads a ball from a height of 6 feet with an initial vertical velocity of 20 feet per second. The height h in
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!