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
Nina [5.8K]
1 year ago
6

Mean variance standard deviation discussions questions

Mathematics
1 answer:
Simora [160]1 year ago
5 0

The answer will be Mean = 135 Variance = 62 and Standard Deviation = 8

<h3>What is the standard deviation? </h3>

Standard deviation is defined as the amount of variation or the deviation of the numbers from each other.

Given that :

Proportion (p) = 54%

Sample size (n) = 250

Using Normal approximation :

Mean = np

Mean = 250 * 0.54 = 135

Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46

Variance = (250 * 0.54 * 0.46) = 62.1 = 62

Standard deviation = √variance = √62.1

Standard deviation = 7.8803553 = 8

To know more about standard deviation follow

brainly.com/question/475676

#SPJ4

You might be interested in
Solve for N. Express the solution in decimal form.
Dmitriy789 [7]

Answer:

N= 3.8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I’m stuck on this and I need help...
Nat2105 [25]

Answer:

D

Step-by-step explanation:

The ratio of corresponding sides are equal, that is

\frac{4}{8} = \frac{y}{14}

3 0
3 years ago
X+y=10 and 2x+4y=30<br>What are the steps to solve this equation?
Ronch [10]

Answer:

x=5 and y=5

Step-by-step explanation:

You "plug" one equation into the other, to get a new equation that only has one variable (x or y), then you can simplify that and have your answer.

So let's plug the first into the second:

First, we convert the first equation into an x=... form. For this one, this means moving the +y to the other side:

x = 10 - y

Now we substitute 10-y for x in the second equation:

So 2x+4y=30 becomes:

2(10-y) + 4y = 30

And simplify that:

20 - 2y + 4y = 30

20 + 2y = 30

2y = 30-20

2y = 10

y = 5

This is the first answer! If we put this into the first equation, we get:

x = 10 - 5 = 5

Now we have both answers, x=5 and y=5

6 0
3 years ago
Complete the table for the number of trees planted compared to the number of trees that continue to
Sedaia [141]

Answer:

the answer is gonna be 55 ,34

Step-by-step explanation:

4 0
2 years ago
20 + 2(3-5)^2 + 30/10 x 3
KonstantinChe [14]

20 + 2*(3-5)^2 + (30/10)*3

20 + (2*[-2])^2 + (3*3)

20 + (-4)^2 + 9

29 + 16

45

Note that * is used to signify multiplication.

5 0
3 years ago
Other questions:
  • What value of x will make this proportion true 14/x=1/2?
    9·2 answers
  • What are the solutions of x^2+6x-6=10
    7·2 answers
  • A clock loses 5 minutes every day. how much time will it lose in 2 hours?
    15·1 answer
  • $43,000 at 7% for 8 years​
    5·1 answer
  • What is the value of n? Enter your answer in the box. n = cm Circle with two intersecting chords forming an x shape in the circl
    13·1 answer
  • Next weekend Marlyn wants to attend either Carnival A or Carnival B. Carnival A charges $6.00 for admission
    8·1 answer
  • Holly opened a savings account at a local bank. She deposited $2,800.00 into the account 5 years ago. If the account earns an an
    10·2 answers
  • Plz Help
    7·1 answer
  • PLEASE HELP I NEED THIS QUICK
    7·2 answers
  • Please assist with this question!!!!!!!!!! No links or your account will be banned
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!