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
MissTica
3 years ago
12

Sixty-eight percent of adults in a certain country believe that life on other planets is plausible. You randomly select five adu

lts and ask them whether they believe that life on other planets is plausible. The random variable represents the number of adults who believe that life on other planets is plausible. Find the mean, variance, and standard deviation of the binomial distribution for the random variable. Interpret the results.
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

Mean = 3.4

Variance = 1.088

Standard deviation = 1.0431

Step-by-step explanation:

P=0.68\\ \\N=5

The mean of a binomial distribution with parameters N (the number of trials) and p (the probability of success for each trial) is m=N\cdot p

Thus,

m=5\cdot 0.68=3.4

The variance of the binomial distribution is s^2=Np(1-p), where s^2​​ is the variance of the binomial distribution, so

s^2=5\cdot 0.68\cdot (1-0.68)=3.4\cdot 0.32=1.088

The standard deviation s is the square root of the variance s^2, so

s=\sqrt{1.088}\approx 1.0431

You might be interested in
Does anyone know the answer to 2/3 divided by 1/6
saveliy_v [14]

Answer:

4

Step-by-step explanation:

You would first do 2/3 times 6/1 which is 12/3. Then you would simplify and divide 12 by 3 to get 4.

7 0
3 years ago
Read 2 more answers
This month the Middle School Media newspaper has 25 pages. Twenty-five schools order the paper for each of their students. Each
EastWind [94]

Answer:

25 to the power of 3.

Step-by-step explanation:

we got 25 schools ordering newspapers for 25 classes of 25 kids. that's 25x25x25. it wants the number of pages total, and since there's 25 pages in each newspaper we add another 25. so it's 25x25x25x25, also known as 25 to the power of 3.

5 0
3 years ago
Last one for the night but yeah
Jobisdone [24]
Answer: RQS= 90, QRS= 43, QSR= 47

Solving Steps:
180-90=90 (all the angles combined equal 180)
9x-2+10x-3=90
19x-5=90
19x=90+5
19x=95
x=5

9(5)-2= 43
10(5)-3= 47
4 0
3 years ago
The end of a pendulum with a length of 21 cm travels an arc length of 24 cm. How many degrees does the pendulum swing?
Tanya [424]

It is given in the question that the end of a pendulum with a length of 21 cm travels an arc length of 24 cm.

So here radius is 21 cm and the arc length is 24 cm .

Now we use the arc length formula , which is

s = r* \theta

Where s is the arc length and r is the radius.

Substituting these values, we will get

24 = 21 \theta
\\
\theta = \frac{24}{21}
\\
\theta = 1.143 radians

And now we need to convert radian to degree, and for that we have to multiply by \frac{180}{ \pi}

That is

1.143 * \frac{180}{ \pi} =65.48 degree

4 0
3 years ago
Which is the same as 9/5
slega [8]

Answer:

18/10 or 1.8

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Help please I would appreciate it ! 10 points
    14·2 answers
  • what is the population of the Emperor penguin rounded to the nearest ten thousand and to the nearest hundred thousand
    10·1 answer
  • What is 3.7 repeating, as a mixed number
    7·2 answers
  • Bruce bought his car for $24,380. It is expected to depreciate an average of 14% each year during the first 6 years.
    5·1 answer
  • Qx+12=13x+P with only one solution
    11·2 answers
  • Twice the difference of two numbers is 14 and their sum is 3<br><br> find the numbers.
    8·2 answers
  • 2 + (x + 4)<br> Help me out
    7·2 answers
  • Some algae contains up to 50% oil by weight. How much oil is in a 7.3-ounce sample of this type of algae?
    8·1 answer
  • Solve for b <br> ցb – m = 9
    15·1 answer
  • Question Multiple Choice Worth 1 points)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!