Ex. 1. A contractor purchases a shipment of 30 computers. It is assumed that, the number of computers with somenonconformities is 0, 1 or 2 with the same probability 1/3. 10 computers from that shipment were randomly chosen andtested. What is the probability, that in this shipment are exactly 2 computers with some nonconformities, if all testedcomputers were good?

Answered: Image /qna-images/answer/4f874956-d320-4e8c-b651-f788a490d35e.jpg

Answered: Ex. 1. A contractor purchases a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

5. A manufacturer of cell phones purchases batteries from a vendor. It is not uncommon to receive defective batteries from this vendor, thus whenever a shipment is received, a sample of batteries is inspected. For this month's shipment, a random sample of 280 batteries is selected and each battery is inspected. If the proportion of defective batteries sampled is more than 1.5%, the entire shipment will be returned to the vendor. What is the probability that this month's shipment will be returned if the true proportion of defective batteries is 4%?
A big bowl contains 3 red chips and 6 white chips. A chip is drawn at random. If it is red, that chip along with an additional red chip will be put back in the bowl. If it is white, the chip is simply returned to the bowl. Next a second chip is drawn. If the 2nd chip is white, what is the probability that the first is red? The answer as 9/29. But I don't know the work.
Determine the probability of the following. Write your answer on the space provided. (20 Points) 1. If one card is shown from an ordinary deck of cards, find the probability of getting the following. a. A king or a queen c. A club or a heart or a spade d. An Ace or a diamond b. A king or a queen or a diamond
Suppose that each time Bar-bie throws a dart, she has a 3/4 probability of getting a bullseye. If Barbie shoots three darts, what is the probability that she gets a bullseye on at least two of them?
3
1. Twelve electric bulbs are drawn independently every hour from a production line at a factory. The number of defective bulbs are random and independent. Suppose that the probability that a bulb is defective is 0.06. a. What is the probability that less than two bulbs are defective? b. What is the probability that three bulbs tested are the second defective bulbs detected?
10) According to the American Academy of Ophthalmology, there is a 45% chance that someone will have brown eyes. What is the probability that all of the next seven people selected will have brown eyes?
28.) A Certain Blood Group type can be find only in 0.05% of the people. If the population of a randomly selected group is 3000. What is the Probability that at least a people in the group have this rare blood group.
12.)The survival rate for trees planted at a particular landscaping company has been 83% in the past. (a) What is the probability that 9 of the next 12 trees planted will survive? (b) What is the probability that no more than 9 of the next 12 trees planted will survive? (c) What is the probability that at least 9 of the next 12 trees planted will survive? (d) What is the probability that 6 to 9 (at least 6 but no more than 9) of the next 12 trees survive? (e) How many of the next 12 trees planted would you expect to survive?
12. If 2% of a certain brand of light bulbs are defective, find the probability that, in a random sample of 80 bulbs, a total of 0, 1, 2, 3, and more than 5 will be defective.
The health of two independent groups of 10 persons each is being studied for 6 months. The probability anyone individual in either group drops out before the end of the 6 months is 0.2 (independent of the otherparticipants). What is the probability at least 9 persons finish the study in either one of the two groups butnot in both groups?

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS