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
Vesna [10]
3 years ago
13

EasyElectrics supermarket orders light bulbs from suppliers, AA Electronics and AAA Electronics. EasyElectrics purchases 30% of

its light bulbs from AA and 70% from AAA. Two percent of the light bulbs purchased from AA are defective, while three percent of the bulbs from AAA are defective. Find the probability that a randomly selected light bulb a) was purchased from AA and is defectivie b) is defective
Mathematics
1 answer:
saw5 [17]3 years ago
3 0

Answer: (a) 0.006

               (b) 0.027

Step-by-step explanation:

Given : P(AA) = 0.3 and P(AAA) = 0.70

Let event that a bulb is defective be denoted by D and not defective be D';

Conditional probabilities given are :

P(D/AA) = 0.02 and P(D/AAA) = 0.03

Thus P(D'/AA) = 1 - 0.02 = 0.98

and P(D'/AAA) = 1 - 0.03 = 0.97

(a) P(bulb from AA and defective) = P ( AA and D)

                                                       = P(AA) x P(D/AA)

                                                       = 0.3 x 0.02 = 0.006

(b) P(Defective) = P(from AA and defective) + P( from AAA and defective)

                         = P(AA) x P(D/AA) + P(AAA) x P(D/AAA)

                         = 0.3(0.02) + 0.70(0.03)

                         = 0.027

You might be interested in
Is 1/4 of 200 greater than 1/2 of 100
MAVERICK [17]
No beacuse 1/4 would be less that 1/2 it's common sense
6 0
3 years ago
Use the picture attached!!
evablogger [386]

Answer:

The Correct Answer is C.0.

Hope it hepls you Czn!

Please Mark me as Brainleast!!!!!!!!

5 0
1 year ago
Add like terms: -3x - (-7x)
olga nikolaevna [1]

Answer:

-3x + 7x = 4x

8 0
3 years ago
If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?
Illusion [34]

Answer:

2/3

Step-by-step explanation:

you can set it up as x/y because it varies directly

so when y=6 x=72

72/6 = 12

so x will always be 12 times greater than y

x=12y

so if x=8

8=12y

y=8/12

y=2/3

3 0
3 years ago
Allante Pizza delivers throughout its local market area at no charge to the customer. However, customers often tip the driver. T
barxatty [35]

Answer:

the best point estimate to use as an estimate of the true mean tip per delivery would be $1.88

the distribution that will be used to obtain the critical value is that you should try to find the population standard deviation and then find out what 90% of that is

i cannot do parts c and d i'm sorry

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • What is the length of MN?
    13·2 answers
  • PLZ HELP ASAP SIMILAR AND CONGRUENT TRIANGLES
    12·1 answer
  • Which digit is in the tenths place 314.902
    5·2 answers
  • How are the expressions "1/4 of 12" and "12divided by 4" related
    15·2 answers
  • The area of a parallelogram is 125 square inches and the height of the parallelogram is 10 inches. What is the lenght of the bas
    5·2 answers
  • Please help, ty if you do :D
    15·1 answer
  • Find the measure of angle BCA.
    13·1 answer
  • 1. Find each measure.<br> a)<br> m20<br> 8<br> R<br> Select<br> 110"<br> S<br> 8<br> T<br> c)
    13·2 answers
  • PLEASE HELP !! ILL GIVE BRAINLIEST !!
    7·2 answers
  • What is the rule for the given sequence? 3, 8, 23, 68, 203,
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!