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
Anestetic [448]
3 years ago
6

If 8% of all cell phones are defective, and you have a random sample group of 100 Samsung Galaxy Vills,

Mathematics
1 answer:
Sati [7]3 years ago
5 0

Answer:

Mean = 8

Variance = 7.36

Standard Deviation = 2.7129

Step-by-step explanation:

This is a binomial distribution with parameters, n and p.

Where

n is sample size (given as 100)

p is the probability of success, or probability of defective (given as 8% or 0.08)

The mean, variance, standard deviation formula for binomial distribution is shown below:

Mean = np

Variance = npq

Standard Deviation = \sqrt{npq}

Where q would be probability of failure, or "1 - p"

Thus,

n = 100

p = 0.08

q = 1 - 0.08 = 0.92

SO, we have:

Mean = np=100*0.08=8

Variance = npq=100*0.08*0.92 = 7.36

Standard Deviation = \sqrt{npq}=\sqrt{7.36}=2.7129

You might be interested in
Which of the following points is collinear with (2, 1) and (3, 3)?
TiliK225 [7]
A the origin is the correct answer
8 0
3 years ago
Helpp me pleaseeeee will give brain
Damm [24]

Answer:

63+22i

Step-by-step explanation:

(8-3i) (6+5i)

first: 8*6 = 48

outer: 8*5i = 40i

inner: -3i*6 = -18i

Last: -15i^2 = -15(-1) = 15

Add them together = 48+40i-18i+15

                                = 63+22i

3 0
3 years ago
Which missing numbers make the following expressions equivalent?
Vladimir79 [104]
The answer is A. 24; 40
3 0
3 years ago
Read 2 more answers
4 brothers share 2 sandwiches equally
N76 [4]
They can each have a half a sandwich.
4 0
3 years ago
What is the area of the sector shown
EastWind [94]

Answer:

D.~ 34.2~cm^2

Step-by-step explanation:

An arc measure of 20 degrees corresponds to a central angle of 20 degrees.

Area of sector of circle

area = \dfrac{n}{360^\circ}\pi r^2

where n = central angle of circle, and r = radius

area = \dfrac{20^\circ}{360^\circ}\pi (14~cm)^2

area = \dfrac{1}{18}(3.14159)(196~cm^2)

area = 34.2~cm^2

5 0
3 years ago
Other questions:
  • Solve the linear equation 2.25 – 11j – 7.75 + 1.5j = 0.5j – 1.
    7·2 answers
  • Simplify the rational expression 4x-8/4x+20
    8·1 answer
  • The capacity of a school is 1100 students and the current enrollment is 980 students. If the student population increases at a r
    6·2 answers
  • In which number is the digit 4 one hundred times larger than the value of 4 in the number 41?
    8·2 answers
  • 7) State the prime factorization of 30.
    7·1 answer
  • 1/8 divided by 3/4 in simplest form
    10·2 answers
  • Jadia was at the state fair from 8:45 AM until 11:00 AM. How much time did Jada spend at the state fair?
    11·1 answer
  • What number between 0 and 20 has four factors?
    5·1 answer
  • What's the domain of this function graph?
    12·1 answer
  • Any help<br> i did not understand it<br> can any body help me <br> it will be great and <br> thanks
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!