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
GenaCL600 [577]
2 years ago
10

If you flip a fair coin 4 times, what is the probability that you will get exactly 2 tails?

Mathematics
2 answers:
Musya8 [376]2 years ago
7 0

Answer:

0.375, or 0.38 rounded.

Step-by-step explanation:

https://socratic.org/questions/if-you-flip-a-fair-coin-4-times-what-is-the-probability-that-you-will-get-exactl

Link to the answer.

andreyandreev [35.5K]2 years ago
3 0

Answer:

50/50

Step-by-step explanation:

2 is half of 4. 4/2 is 50/50

You might be interested in
In Applied Life Data Analysis (Wiley, 1982), Wayne Nelson presents the breakdown time of an insulating fluid between electrodes
ale4655 [162]

Answer:

The sample mean is \bar{x}=14.371 min.

The sample standard deviation is \sigma = 18.889 min.

Step-by-step explanation:

We have the following data set:

\begin{array}{cccccccc}0.15&0.82&0.81&1.44&2.70&3.28&4.00&4.70\\4.96&6.49&7.25&8.03&8.40&12.15&31.89&32.47\\33.79&36.80&72.92&&&&&\end{array}

The mean of a data set is commonly known as the average. You find the mean by taking the sum of all the data values and dividing that sum by the total number of data values.

The formula for the mean of a sample is

\bar{x} = \frac{{\sum}x}{n}

where, n is the number of values in the data set.

\bar{x}=\frac{0.15+0.82+0.81+1.44+2.7+3.28+4+4.7+4.96+6.49+7.25+8.03+8.4+12.15+31.89+32.47+33.79+36.80+72.92}{19}\\\\\bar{x}=14.371

The standard deviation measures how close the set of data is to the mean value of the data set. If data set have high standard deviation than the values are spread out very much. If data set have small standard deviation the data points are very close to the mean.

To find standard deviation we use the following formula

\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} }

The mean of a sample is  \bar{x}=14.371.

Create the below table.

Find the sum of numbers in the last column to get.

\sum{\left(x_i - \overline{X}\right)^2} = 6422.0982

\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{x}\right)^2 }}{n-1} }       = \sqrt{ \frac{ 6422.0982 }{ 19 - 1} } \approx 18.889

7 0
3 years ago
What is 4f - 24 + 4f = -8
Lynna [10]

Answer:

F = 2

Step-by-step explanation:

4f-24+4f=-8

collect like terms

8f-24=-8

move constant to the right

8f=-8+24

calculate

8f=16

divide both sides by 8

Answer F = 2

3 0
3 years ago
Find the value of the variable or the measure of the missing part of each kite BD=
nataly862011 [7]

Step-by-step explanation:

ED = EB

2x +3 = 5x -15

3+15=5x -2x

18 = 3x

18 ÷ 3 = x

x = 6

7 0
2 years ago
A 12 foot ladder is leaning up against a wall. If the angel made between the ladder and the ground is 80 degrees. How far up can
lorasvet [3.4K]

Answer:

<h3>11.8 feet</h3>

Step-by-step explanation:

Given

Length of the ladder = 12foot

angle of elevation = 80 degrees

Required

Height of the wall (opposite side)

The set up will form a right angled triangle where

length of the ladder is the hypotenuse

height of the wall is opposite;

Using SOH, CAH, TOA trig identity

According to SOH

sin 80 = opp/hyp

sin80 = opp/12

opp = 12sin80

opp = 11.82 feet

Hence the height of the wall is 11.8feet (to the nearest tenth)

5 0
3 years ago
Zaire, Manny, Richard, Navid and Gregory found a rope that was 271.5 feet long. If they cut the rope into equal pieces, what was
posledela

Answer:

43.5

Step-by-step explanation:

217.5/5

43.5

4 0
3 years ago
Other questions:
  • Five notebooks cost $20 at this rate how much would 4 notebooks coat?
    7·2 answers
  • A group of 55 friends meets for lunch. They greet each other by exchanging fist bumps. How many fist bumps are exchanged if each
    10·2 answers
  • Please help me out if possible.
    11·1 answer
  • Name the variable in each expression. a+8
    8·1 answer
  • What is the simplified value of the exponential expression 27 Superscript one-third?
    5·2 answers
  • On a certain road map, the scale is 1 inch = 12 miles. Aurora Springs and Glendale are 4 inches apart on the map. What is the ac
    10·1 answer
  • Thanks for everyone who's helping :) please help for a grade and due today
    14·1 answer
  • Carl types 180 words in 2 minutes. At this rate, how many words can Carl type in 5 minutes?
    10·2 answers
  • I NEED HELP I NEED HELP I NEED HELP I NEED HELP I NEED HELP
    5·2 answers
  • Instructions: Interpret the function given in the context of the real-world situation described to answer the question.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!