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]
3 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]3 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]3 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
The principal of a large high school wants to know if students spend more than 1 hour doing homework per night, on average. To i
MrRissso [65]

Answer:

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

If we define the random variable X ="time spend by the students doign homework"

And we want to tes t is students spend more than 1 hour doing homework per night, on average (alternative hypothesis), so then the system of hypothesis for this case are:

Null hypothesis: \mu \leq 1

Alternative hypothesis: \mu >1

And they wnat to use a sample size of n = 100 and a significance level of 0.05

7 0
3 years ago
Which graph represents the function y=2x-4
Nana76 [90]

Answer:

Step-by-step explanation:

pls find below

hope this helps

8 0
3 years ago
What is 12.99 remainder fraction? <br><br> Then could you please put it as a fraction?
Katarina [22]
It would bw 12 99/100 and then 1299/100
5 0
3 years ago
Sheila is going to divide a 38-inch piece of ribbon into 5 equal pieces. She says each piece
DENIUS [597]

Sheila is incorrect! I think what she did is think the 38 was actually a 35, which WOULD of made her statement true, but since it's 38, she's very incorrect. Sheila should be using the quotient for the size of each piece. 38 divided by 5 is 7.6. The correct answer is 7.6 inches.

5 0
3 years ago
Evaluate 14+(-9)+(-9)
Vilka [71]
The answer to your question is -4
6 0
3 years ago
Other questions:
  • How to work out the decimal between 2.65 and 2.66? With working out please
    5·2 answers
  • If a varies inversely as the cube root of b and a=1 when b=64, find b​
    8·1 answer
  • Hullan's age is three times Thomas's age. The sum of their ages is 92. What is Thomas's age?
    8·1 answer
  • A baseball card that originally cost $24 has been decreasing in value
    8·1 answer
  • What is the answer to this
    12·1 answer
  • The two perpendicular lines of a coordinate plane that intersect at the origin (singular: axis)
    12·2 answers
  • PLEASE HELP FAST!!<br>8. Find the unknown side of the triangle below. Show your work. 17 in 8 in X​
    10·1 answer
  • Please..? I need help
    9·1 answer
  • Can’t figure this problem out need help
    11·1 answer
  • I need help now pls
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!