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
e-lub [12.9K]
3 years ago
11

A store has 80 modems in its inventory, 30 coming from Source A and the remainder from Source B. Of the modems from Source A, 20

% are defective. Of the modems from Source B, 8% are defective. Calculate the probability that exactly two out of a sample of five modems selected without replacement from the store’s inventory are defective.
Mathematics
1 answer:
RUDIKE [14]3 years ago
7 0

Answer:

0.102

Step-by-step explanation:

The number of defective modems in the inventory is 20% * 30 + 8% * 0.50 =10 (out of 80)

Note that the number of defectives in the inventory is fixed i.e. we are told that there is 1/8 probability that a modem in the inventory is defective, but rather that exactly 1/8 of all modems are defective.

The probability that exactly two modems in a random sample of five are defective is :

(10↓2)(70↓3) / (80↓5) = 0.102

You might be interested in
Sean got m marks for his math test.Emma got 15 more marks than Sean Emma score is 97
Dafna1 [17]
97-15=82 so he got 82
5 0
3 years ago
Help meeeeeeeee answer these questions or correct them your like my human checker because calculators to check get boring
IRISSAK [1]
4 is 16.3, I don't know 5 or 6, 7 is 176, I don't know 8 or 9, 10 is 8.1, I don't know 11, and 12 is 48.
(I used a calculator, lol)
4 0
3 years ago
What is the velocity of it?
Sveta_85 [38]
I don't know the answet
8 0
3 years ago
Look at the drawing below.
Ratling [72]

Answer:

\small\mathfrak\green{2x + 10 + 46 = 180 \:   = linear \: pair} \\  \\ \small\mathfrak\red{hope  it  helps...}

8 0
3 years ago
Need help please tell me the answers for each one
neonofarm [45]
The answer to the question

7 0
3 years ago
Other questions:
  • Equivalent ration of <br> b/40=9/10<br> b=____ ?
    12·1 answer
  • Find measure of angle BDC
    7·1 answer
  • Write as an algebraic expression
    9·1 answer
  • Abger Electronics, a retail store, restructures its employees’ schedules every six months. The employees are asked for their shi
    13·2 answers
  • Find the unknown side length, x. Write your answer in simplest radical form.
    13·1 answer
  • Find the missing side length in the image attached.
    13·2 answers
  • The following is an example of 5x2
    8·2 answers
  • 21 points!!
    12·2 answers
  • How do answer this please help help me
    12·2 answers
  • Solve the following variation problem.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!