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
scoundrel [369]
3 years ago
9

On a particular production line,the likelihood that a light bulb is defective is 5%. Ten light bulbs are randomly selected. What

are the mean and variance of the number of defective bulbs?
Mathematics
1 answer:
KengaRu [80]3 years ago
5 0

Answer:

Mean and Variance of the number of defective bulbs are 0.5 and 0.475 respectively.

Step-by-step explanation:

Consider the provided information,

Let X is the number of defective bulbs.

Ten light bulbs are randomly selected.

The likelihood that a light bulb is defective is 5%.

Therefore sample size is = n = 10

Probability of a defective bulb = p = 0.05.

Therefore, q = 1 - p = 1 - 0.05 = 0.95

Mean of binomial random variable: \mu=np

Therefore, \mu=10(0.05)=0.5

Variance of binomial random variable: \sigma^2=npq

Therefore, \sigma^2=10(0.05)(0.95)=0.475

Mean and Variance of the number of defective bulbs are 0.5 and 0.475 respectively.

You might be interested in
Find -sqrt(36<br> O t6<br> O -6<br> O 6<br> O 18
gavmur [86]
-sqrt(36) = -6

Hope this helps :)
8 0
3 years ago
Three equivalent ratio of 48:36
Andre45 [30]
Three equivalent ratios of 48:36 are 12:9 ,24:18 ,16:12.
5 0
3 years ago
Is student is reading a book about 370 words per minute convert this rate to words per hour
Helen [10]
Answer:
22,200 words per hour
step-by-step explanation:
60 minutes per hour
370 words per minute
370(60)
22,200
8 0
3 years ago
Read 2 more answers
while playing a game maria defeated 8 enemies with each enemy defeated earing her 7594 points if she traded in all her points fo
MAVERICK [17]
30,376 points per extra life
4 0
3 years ago
Read 2 more answers
Plz answer the whole thing
Firlakuza [10]
Thats the question im sorry if i said it wrong
6 0
3 years ago
Other questions:
  • Average Joe goes to a community college for an interview. He wants to train for a career with a lot of openings. One career they
    15·1 answer
  • The area of a rectangular roof on a doghouse is 756 in.² the length of the roof is 108 inches how many inches wide is the roof
    10·1 answer
  • Which situation involves descriptive statistics?
    6·2 answers
  • Triple A number is the same as double the number increased by 5
    5·2 answers
  • 5/11=6/y<br> How to solve this equation
    9·1 answer
  • Veena's father is 7 years older than five times the age of Veena. If his age is 37. find Veena's age.​
    5·1 answer
  • In the diagram, the measure of 1 is 55°. If line y is rotated 5° clockwise about the point of
    9·1 answer
  • If f(x) = 1/9x-2, what is f^-1(x)?
    11·2 answers
  • Company making $35,000 yearly company hiring help from another company guaranteeing they will profit $40,000 more in the same ye
    12·1 answer
  • Pls solve I need it solved rn show work urgent PLS*****
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!