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
Morgarella [4.7K]
3 years ago
8

A tray of electronic components contains 15 components, 4 of which are defective. If 4 components are selected, what is the poss

ibility that (a) all 4 are defective? (b) 3 are defective and 1 is good? (c) exactly 2 are defective? (d) none are defective?
Physics
1 answer:
dlinn [17]3 years ago
8 0

Answer:

a) 0.0007326

b) 0.03223

c) 0.2418

d) 0.2418

Explanation:

To find different probabilities for the selection of components among eleven good and four defective components, we will use the Combination.

a) C(4,4) = 1; C(15,4) = 1365

P = \frac{C(4,4)}{C(15,4)} = \frac{1}{1365} = 0.0007326

b) C(4,3) = 4; C(11,1) = 11

P = \frac{C(4,3)*C(11,1)}{C(15,4)} = \frac{4*11}{1365} = 0.03223

c) C(4,2) = 6; C(11,2) = 55

P = \frac{C(4,2)*C(11,2)}{C(15,4)} = \frac{6*55}{1365} = 0.2418

d) C(11,4) = 330

P = \frac{C(11,4)}{C(15,4)} = \frac{330}{1365} = 0.2418

You might be interested in
A uniform solid ball has a mass of 20 g and a radius of 5 cm. It rests on a horizontal surface. A sharp force is applied to the
Lapatulllka [165]

Answer:

i think the answer is 32 something

Explanation:

4 0
3 years ago
Suppose a diving board with no one on it bounces up and down in a simple harmonic motion with a frequency of 6.90 Hz. The board
Kobotan [32]

Answer:

The frequency of the simple harmonic motion of a 67.6 kg diver on the board = 2.48 Hz

Explanation:

The frequency in simple harmonic motion is related to spring constant and mass causing the motion through the relation

f = (1/2π) √(k/m)

When mass = 10 kg, f = 6.90 Hz,

6.9 = (1/2π) √(k/10)

(√(k/10) = 6.9×2π = 43.354

k/10 = 43.354² = 1879.57

K = 18795.7 N/m

When a diver of mass 67 kg climbs the diving board, the total mass on the diving board now becomes (10+67.6) = 77.6 kg

Spring constant of the diving board doesn't change,

So, the frequency is then given by

f = (1/2π) √(18795.7/77.6)

f = 2.48 Hz

8 0
3 years ago
Read 2 more answers
How does Newton’s first second and third laws apply to eating your breakfast
____ [38]

Answer:

Newton's third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects. However much you push your fork in the food, that much a dent it will cause.

Explanation:

6 0
3 years ago
Read 2 more answers
A small boat is moving at a velocity of 1.93 m/s when it is accelerated by a river current perpendicular to the initial directio
olasank [31]

Answer:

16.405m/s

Explanation:

Given, initial velocity = u = 1.93m/s, acceleration = a = 0.750m/s2, time = t = 19.3s, final velocity = v= ?

Using the first equation of linear motion,

v = u + at

v = 1.93 + 0.750 x 19.3

v = 1.93 + 14.475

v = 16.405m/s

7 0
3 years ago
Read 2 more answers
Which list shows the development of atomic models in chronological order?
ikadub [295]
I think it would be plum pudding, solid ball, solar system.
8 0
3 years ago
Other questions:
  • Two men decide to use their cars to pull a
    14·1 answer
  • Lava that is very runny probably
    8·1 answer
  • When 1.50 ✕ 10^5 J of heat transfer occurs into a meat pie initially at 20.0°C, its entropy increases by 465 J/K. What is its fi
    9·1 answer
  • An electrostatic paint sprayer has a 0.200-m-diameter metal sphere at a potential of 25.0 kV that repels paint droplets onto a g
    8·1 answer
  • Christian made some pancakes she's so 3/5 of them in the morning and 1/4 of the remainder in the afternoon is she had 300 pancak
    5·1 answer
  • I will take my exam tommorrow, what shall i do?​
    6·1 answer
  • An object takes 29.5 years to orbit the Sun. What is its average distance from the Sun?
    10·1 answer
  • Un cuerpo que pesa 80 N cae libremente, cuando se encuentra a 9 metros de altura su velocidad es 5 m/s. determina su energía cin
    8·1 answer
  • A rebuilt bicycle is worth a certain amount because it takes that much labor to produce it. Who did Marx believe should be compe
    8·1 answer
  • Can You Explain?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!