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
Verizon [17]
3 years ago
12

A shelf in the Metro Department Store contains 90 colored ink cartridges for a popular ink-jet printer. Five of the cartridges a

re defective. (a) If a customer selects 3 cartridges at random from the shelf, what is the probability that they are all defective? (Round your answer to five decimal places.) (b) If a customer selects 3 cartridges at random from the shelf, what is the probability that at least 1 is defective? (Round your answer to three decimal places.)
Mathematics
1 answer:
belka [17]3 years ago
4 0
A ) 
P ( x = 3 ) = 5/90 * 4/89 * 3/88  = 1 / 11,748 = 0.000085
b ) 
Probability of selecting zero defective cartridges:
P ( x = 0 ) = 85/90 * 84/89 * 83/88 = 592,620 / 704,880 = 0.840739
P ( at least 1 defective) = 1  -  0.840739 = 0.159261 
You might be interested in
Kaitlyn creates an architectural blueprint of a rectangular dining room.The area of the actual dining room is 900 times as large
8090 [49]
We need to make a scale between blueprint and actual size. The trick in this question is to understand that the scale for the areas and the scale for the lengths are different.
Scale for area is given in the question as
1 unit on blueprint = 900 units in actual.
As the dining room is given to be rectangular we can find the scale for lengths by taking square root of scale for area.

√1 unit on blueprint = √900 units in actual
Therefore, scale for length= 1:30

Thus, by using the scale we can calculate actual length corresponding to 4 inches on blueprint by multiplying 4 with scale
4 inches×1/30=120inches

Answer = 120 inches

6 0
3 years ago
Question in picture above
almond37 [142]
A is the correct answer
8 0
3 years ago
Whats 2+2? please help i literally dont know
UkoKoshka [18]

Answer:

2 + 2 = 4

Step-by-step explanation:

 

8 0
3 years ago
What is the solution set for this inequality?<br> -8x + 40&gt;-16
dolphi86 [110]

Answer:

x<7

Step-by-step explanation:

hope this helps :)

3 0
3 years ago
PLISSSS HELP THIS FOR EXAM HAS A PICTURE
gizmo_the_mogwai [7]

Answer:

use mmaatthh wwaayy

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Richard works at an ice cream shop. Regular comes get 2 scoops of ice cream, large cones get 3 scoops. One hotnsaturday Richard
    13·1 answer
  • Is this right or wrong
    14·1 answer
  • Which comparison is correct for the values of f(x) and g(x) when x=−1 ?
    10·1 answer
  • M=-1/4; (4,0) Please help, I don't understand. :(
    12·1 answer
  • Which statement best compares the two functions?
    13·1 answer
  • The scatterplot below shows the relationship between the height, in inches, and the shoe size of each of 10 students in a class.
    14·1 answer
  • WILL GIVE BRAINLIEST
    11·1 answer
  • 2 sides of a triangle have the following measures. Find the range of possible measures for the third side.
    9·1 answer
  • I need B.<br><br> EMERGENCY THANK YOU VERY MUCH!!!
    9·1 answer
  • In how many possible ways can this be accomplished if there are 25 members on the board of directors
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!