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
Stolb23 [73]
4 years ago
8

A coin is to be tossed 36 times what are the mean and standard deviation of the number of heads

Mathematics
1 answer:
viva [34]4 years ago
3 0

Answer:

Binomial distribution,

n = 36 independent events,

p = 0.5 probability of success and of failure, as 1-p = p.

Mean of binomial distribution is np=18.

Variance is np(1-p)=9

Standard deviation is sqrt(variance)=3.

You might be interested in
Behind my math class help pls
vladimir2022 [97]

Answer:

Please check the explanation.

Step-by-step explanation:

Part a)

Given that the two parallel lines are crossed by a transversal line.

Given that

m∠2 = 2x + 54 and m∠6 = 6x - 11

Angle ∠2 and ∠6 are corresponding angles.

Corresponding angles are congruent.

Thus,

m∠2 = m∠6

2x + 54 = 6x - 11

flipe the equation

6x - 11 = 2x + 54

subtract 2x from both sides

6x - 2x - 11 = 2x - 2x + 54

4x - 11 = 54

adding 11 to both sides

4x - 11 + 11 = 54 + 11

4x = 65

dvide both sides by 4

4x/4 = 65/4

x = 16.2500    (round to 4 decimal places)

Part b)

We have already determined

x = 16.2500

Given

m∠2 = 2x + 54

substitute x = 16.2500 in the euation

        = 2(16.2500) + 54

        = 86.5°

As angle ∠2 and angle ∠1 lie on a straight line. Hence, the sum of their angles must be 180°.

i.e.

m∠1 + m∠2 = 180°

substituting m∠2 =  86.5° in the equation

m∠1 + 86.5°  = 180°

subtracting 86.5° from both sides

m∠1 + 86.5° - 86.5° = 180° - 86.5°

m∠1 = 93.5°

Therefore, the measure of angle m∠1 is:

  • m∠1 = 93.5°
4 0
3 years ago
Why is this action surprising. HELP PLEASE
jenyasd209 [6]

Answer:

The first one sounds suprising but what is the action?

6 0
3 years ago
Help??I have 4 questions and im confused on all of them
KengaRu [80]
So you you are trying to find the area of sphere so you would use this formula
A=4•3.14•r^2

And you already know that the radius is 6 so you would go ahead and plug in the numbers
A=4•3.14•4^2

4^2 is 16 so your final equation would be
A=4•3.14•16

And your answer is

=452.39
4 0
3 years ago
Solve the proportion. Solve for w
deff fn [24]
The answer for w is w=3.5 <span />
6 0
3 years ago
Read 2 more answers
What is the difference between -2 and -6?<br><br> 8<br> -8<br> -4<br> 4
Sedaia [141]
Hi there! The word "difference" means to subtract. -2 - -6=4. Therefore, it would be the last one.
8 0
3 years ago
Other questions:
  • The quadrilateral shown is a parallelogram. If AC = 28, what is the measure of AE?
    10·1 answer
  • What is the slope of this line?<br><br><br> −34<br><br> −3<br><br> 4<br><br> 34
    12·2 answers
  • Discrete math
    11·1 answer
  • In the triangle below, find the measurements of the unknown angles.
    5·1 answer
  • What is 1.2÷33.6 is the answer 28?
    7·1 answer
  • Here take some points friend! :)
    6·2 answers
  • Please help! Looking for the best answer!
    13·1 answer
  • THE FIRSTT <br> ONE Plsss someone help me
    13·1 answer
  • 2/3x+5=21 pls use shoe work
    10·1 answer
  • Which graph represents the solution set of -2y &gt; 7x + 4?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!