Question: One professor grades homework by randomly choosing 5 out of 12 homework problems to grade. (a) How many different groups of 5 problems can be

One professor grades homework by randomly choosing 5 out of 12 homework problems to grade.
(a) How many different groups of 5 problems can be chosen from the 12 problems?
(b) Probability Extension Jerry did only 5 problems of one assignment. What is the probability that the problems he did comprised the group that was selected to be graded?
(c) Silvia did 7 problems. How many different groups of 5 did she complete? What is the probability that one of the groups of 5 she completed comprised the group selected to be graded?

Step by Step Solution

★★★★★

3.40 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The order of the problems selected is irrelevant so use the combinations method a b Jerry mus... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

785-M-S-P (5897).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Doing homework is a nightly routine for most school-age children. The article Family Involvement with Middle-Grades Homework: Effects of Differential Prompting (Balli, S. J., J. F. Wedman, and D. H....

A sociologist wants to pick 3 fifth-grade students from each of four schools. If each of the schools has 50 fifth-grade students, how many different groups of 12 students can he select? (Set up in...

The qualified applicant pool for six management trainee positions consists of seven women and five men. (a) How many different groups of applicants can be selected for the positions? (b) How many...

One professor grades homework by randomly choosing 5 out of 12 homework problems to grade. We want to count how many different groups of 5 Homeworks are possible. a) Is this a permutation or a...

Counting: Grading One professor grades homework by randomly choosing 5 out of 12 homework problems to grade. (a) How many different groups of 5 problems can be chosen from the 12 problems? (b)...

one professor grades homework by randomly choosing 5 out of 12 homework problems to grade. How many different groups of 5 can be chosen from 12 problems.

One professor grades homework by randomly choosing 5 out of 9 homework problems to grade. (a) How many different groups of 5 problems can be chosen from the 9 problems? groups (b) Probability...

1 3. [-14 Points] DETAILS BBUNDERSTAT1O 4.3.026. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER One professor grades homework by randomly choosing 6 out of 12 homework problems to grade. (a) How many...

Find the coefficients that balance the following equations. a. O2 + PCl3 POCl3 b. P4 + N2O P4O6 + N2 c. As2S3 + O2 As2O3 + SO2 d. Ca3(PO4)2 + H3PO4 Ca(H2PO4)2

An aquarium is planning to install 3 EV chargers in the parking lot and each one is expected to cost $738. The aquarium made extra revenue from charging vehicles and new patrons visiting the aquarium...

An election polling company in Australia wishes to determine whether those born overseas have similar party voting intentions to those born in Australia. A random sample of 118 registered voters was...

Coupons and customer expectations. A researcher studying the effect of coupons on consumers expectations makes up two different series of ads for a hypothetical brand of cola for the past year....

Sociology: Social Media With as much attention as Twitter gets in the news, you might be surprised to learn that only about 10% of people in America use Twitter. In a group with 20 people (assume...

Psychology: Deceit Aldrich Ames is a convicted traitor who leaked American secrets to a foreign power. Yet Ames took routine lie detector tests and each time passed them. How can this be done?...

Hardware Store: Income Trevor is interested in purchasing the local hardware/sporting goods store in the small town of Dove Creek, Montana. After examining accounting records for the past several...

1. Again, the chickenegg problem! A chicken lays a number of eggs, N, which follows a Poisson[)\\) distribution. Each egg hatches a chick with probability 33, independently. Let X be the number of...

Assume Evco, Inc. has a current stock price of $45.37 and will pay a $1.95 dividend in one year; its equity cost of capital is 15%. What price must you expect Evco stock to sell for immediately after...

On July 10, 2012, you purchase a $10,000 par T-note that matures in five years. The settlement occurs on July 11, 2019. The coupon sate is 7 percent and the current price quote is 95 1564 percend The...