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
Lesechka [4]
3 years ago
10

Suppose a shipment of 400 components contains 68 defective and 332 non-defective computer components . From the shipment you tak

e a random sample of 25. When sampling with replacement (so that the p = probability of success does not change), note that a success in this case is selecting a defective part. The standard deviation of this situation is?
Mathematics
1 answer:
Alona [7]3 years ago
6 0

Answer:

The standard deviation for the number of defective parts in the sample is 1.88.

Step-by-step explanation:

The sample is with replacement, which means that the trials are independent, and thus, the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.  

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

68 defective out of 400:

This means that p = \frac{68}{400} = 0.17

From the shipment you take a random sample of 25.

This means that n = 25

Standard deviation for the number of defective parts in the sample:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{25*0.17*0.83} = 1.88

The standard deviation for the number of defective parts in the sample is 1.88.

You might be interested in
Josephine is taking a college course, and her professor bases the course grade on the average of 2 tests taken in the semester.
Rufina [12.5K]

b = 2A - a

a + b = 2A

(a + b)/2 = A

6 0
3 years ago
Read 2 more answers
Determine the missing side of the square.
Gekata [30.6K]

Answer:

The missing side is 9cm.

How I got my answer:

1. Squares have equal sides.

2. The area is 81cm^2, so we have to divide 81 by 9.

81 : 9 = 9cm.

4 0
3 years ago
Read 2 more answers
Simplify the following expression.<br> ​<br> ​ 15p+15p+25p =​
IrinaK [193]

​ 15p+15p+25p=​30p+25p=55p

3 0
3 years ago
Mrs. Lee bought 2 boxes of plastic bags. She had 1,988 craft sticks. She divided the Craft Sticks equally into 28 plastic bags f
Serjik [45]
The answer is D. 72 sticks.
5 0
3 years ago
Read 2 more answers
If your purchases of shoes increase from 9 pairs per year to 11 pairs per year when your income increases from $19,000 to $21,00
Leni [432]

Answer: commom resources good

Step-by-step explanation:

The question above signifies that I can't eliminate shoes from my list. To me, shoes are inexcludable. You can see that as my income increases, my purchases of shoes increase.

I chose common resources good because they are non-excludable (something difficult to eliminate), but can compete with other goods. This means that their availability to other people decreases when they are being used up.

Other types of goods besides common resources good are

- Private goods (products that are easily eliminated and rival)

-Club goods (excludable products but non rival)

-Public goods (unable to eliminate and non-rival)

8 0
3 years ago
Other questions:
  • Find the domain of the expression: <br><br> the square root of x+8
    15·2 answers
  • (Photo)
    7·2 answers
  • the intersection of roads m and n creates a 41.4 angle. what are the complementary and supplementary angles of this intersection
    9·1 answer
  • A scientist had 3/5 liter of solution. He used 1/6 of the solution for an experiment. How much solution did the scientist use fo
    9·1 answer
  • (6)/(7)x-(2)/(5)y+(5)/(7)(y+x)<br> PLEASE HELP!!!!!
    6·1 answer
  • What is the answer I need it plzz
    10·2 answers
  • Only 3 more questions to go
    7·1 answer
  • X_X?<br> or<br> -{0-0}-<br> calalallalalalalalaa
    6·1 answer
  • 1Q _____is neither a prime number nor a composite number
    6·1 answer
  • Which statement best describes a graph of paired points that form a proportional relationship?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!