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
nlexa [21]
2 years ago
14

What is the probability of tossing a standard coin and having it land on head three times in a row?

Mathematics
1 answer:
sergejj [24]2 years ago
4 0

Answer:

the probability of a coin landing on heads 3 times in a row is 1/8 or 0.125 or 12.5%

Step-by-step explanation:

the chance of landing heads once is 1/2, for it to be 2 times in a row its 1/4, and 3 times in a row its 1/8, basically every time you want to do it in a row you multiply 1/2, so for example for this question you multiply 1/2 by however times you want the coin to land on heads in a row, (1/2) X(1/2)X(1/2)

You might be interested in
The market and Stock J have the following probability distributions:
denis-greek [22]

Answer:

1) E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%

2) E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%

3) E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1

And the variance would be given by:

Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89

And the deviation would be:

Sd(M) = \sqrt{13.89}= 3.73

4) E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8

And the variance would be given by:

Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56

And the deviation would be:

Sd(M) = \sqrt{55.56}= 7.45

Step-by-step explanation:

For this case we have the following distributions given:

Probability  M   J

0.3           14%  22%

0.4           10%    4%

0.3           19%    12%

Part 1

The expected value is given by this formula:

E(X)=\sum_{i=1}^n X_i P(X_i)

And replacing we got:

E(M) = 14*0.3 + 10*0.4 + 19*0.3 = 13.9 \%

Part 2

E(J)= 22*0.3 + 4*0.4 + 12*0.3 = 11.8 \%

Part 3

We can calculate the second moment first with the following formula:

E(M^2) = 14^2*0.3 + 10^2*0.4 + 19^2*0.3 = 207.1

And the variance would be given by:

Var (M)= E(M^2) -[E(M)]^2 = 207.1 -(13.9^2)= 13.89

And the deviation would be:

Sd(M) = \sqrt{13.89}= 3.73

Part 4

We can calculate the second moment first with the following formula:

E(J^2) = 22^2*0.3 + 4^2*0.4 + 12^2*0.3 =194.8

And the variance would be given by:

Var (J)= E(J^2) -[E(J)]^2 = 194.8 -(11.8^2)= 55.56

And the deviation would be:

Sd(M) = \sqrt{55.56}= 7.45

8 0
3 years ago
What is 9 ten thousands ÷10
borishaifa [10]
9 ten-thousands is 9*10,000=90,000.  90,000/10 is 9,000, or nine thousands.
6 0
3 years ago
Read 2 more answers
My math teacher just gave me a super hard question WILL GIVE CROWN!!!!
saveliy_v [14]
This one is super difficult, I see your struggle but the answer is A.
6 0
1 year ago
Read 2 more answers
How do you estimate 52% of 84?
Nastasia [14]
The way to answer this question is to first make 52% into a decimal:

52% = 0.52

so now we will simply multiply:

   84
x.52

once you have multiplied these numbers it comes out to be 43.68.
So your answer is 43.68.

Hope this answer helps! feel free to ask any additional questions :)
6 0
2 years ago
A circle has a radius of 30 cm.
topjm [15]
It would be 60 because all you do is double the radius because it is only half of the circle
4 0
2 years ago
Read 2 more answers
Other questions:
  • Please help me understand! Thank you!!
    14·2 answers
  • mark just bought a new vacuum cleaner for $220. he used a 30% off coupon and then paid 5.1% sales tax. what was his final cost?
    8·1 answer
  • What fraction is larger 2/9 or 2/5
    7·2 answers
  • HELPPPPPP!!!!!!!!PLSSSS!!!!!!!
    10·2 answers
  • A scientist measures a substance to be 0.6 grams. Calculate the percent of error in the measurement.
    14·1 answer
  • If the point (2,4 is rotated 90 degrees clockwise what is the location of the new point
    8·1 answer
  • Select the postulate that is illustrated for the real numbers.
    7·1 answer
  • Please answer this correctly
    8·2 answers
  • Juarez scored 32 points in a basketball game. He scored twice as many baskets worth 3 points than baskets worth 2 points. How ma
    8·2 answers
  • 8,487 divided by 8 I need help !
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!