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
zavuch27 [327]
3 years ago
5

A teacher chooses 4 different students to answer questions. There are 21 sophomores and 8 freshmen. Find the probability of the

teacher choosing 2 sophomores, then 2 freshmen.
Advanced Placement (AP)
1 answer:
Delvig [45]3 years ago
4 0

There are C(29, 4) = 29!/(4! (29 - 4)!) ways of selecting any 4 students from the total 21 + 8 = 29 students.

The teacher has C(21, 2) = 21!/(2! (21 - 2)!) ways of picking out 2 sophomores and C(8, 2) = 8!/(2! (8 - 2)!) ways of picking out 2 freshmen, so there are

C(21, 2) • C(8, 2) = 5880

possible ways of picking out 2 sophomore and 2 freshmen.

The probability of picking out a group of students like this is then

C(21, 2) • C(8, 2) / C(29, 4) = 280/1131 ≈ 0.2476

You might be interested in
The No Child Left Behind Act was a grant program enacted in 2002 that directed testing elementary and secondary students in math
mart [117]
I believe it C sorry if it wrong
5 0
3 years ago
I REALLY NEED HELP ON THE QUESTION PLEASE!!!!!
stealth61 [152]

it is upside down

but I know that there is somebody that has been answering those question.

4 0
3 years ago
What government office helps individuals fund their college education
My name is Ann [436]
The Office Of Federal Student Aid
3 0
3 years ago
Which document influenced our 3rd amendment eight of not having to quarter or house soldiers in our homes?
KiRa [710]

Answer: English Bill Of Rights is the correct answer

Explanation: This was passed by Congress September 25, 1789. Ratified December 15, 1791. The first 10 amendments form the Bill of Rights

6 0
3 years ago
Read 2 more answers
1. What economic question(s) does this case require the town to ask? (2 points) 2. List the possible resources that the town wou
Oxana [17]
I don't have the last answer, but here are the rest of them

<span>1.  </span><span>What economic question(s) does this case require the town to ask? (2 points)  </span>

<span>a.           </span>Should the dog park be built?

<span>b.           </span>Should the schools be expanded?

<span>c.           </span>Should the land be sold to the man who wants to build luxury homes?

 

<span>2.  </span>List the possible resources that the town would need to construct and maintain the park. (2 points)

<span>a.           </span>Fencing.

<span>b.           </span>Waste bag dispensers

<span>c.           </span>Playground-like area

 

<span>3.  </span>What town resource(s) are scarce? (1 points)

<span>a.           </span><span>money  </span>

<span>b.           </span>material

 

<span>4.  </span>Who will be the consumers using this public good<span>? (2 points)  </span>

<span>a.           </span>The public who own dogs

<span>b.           </span>7,000 registered dogs

<span>c.           </span>Unknown amount of unregistered dogs.

 

<span>5.  </span>What is the opportunity cost <span>of building this park? Explain. (5 points)  </span>

<span>6.  </span>Identify at least one pro and one con for each of the following options: (5 points)

<span>a.  </span><span>leaving the land undeveloped  </span>

<span>b.  </span><span>selling the land to real estate developers to build homes  </span>

<span>7.  </span>What, if any, market failures might exist in this town? Explain. (3 points)

<span>a.           </span><span> What if the dog park is built, and is unused?</span>

<span>b.           </span><span>What if the land is sold to build luxury homes, and they are too    expensive to be bought/rented?</span>

<span>c.           </span>What if the school is expanded, and isn’t filled?

<span>d.           </span> 

<span>8.  </span>Create a chart that identifies the positive and negative externalities <span>of building the  park. Explain the effect of each externality. (Hint: You may use the charts on pp.  </span>

64−65 as a guideline.) (6 points)

 

<span> <span><span> <span> Pro’s </span> <span> Con’s </span> </span> <span> <span> The dog park offers space for dogs. </span> <span> What if land is wasted? </span> </span> <span> <span> Gives dog owners a space of their own to interact with their pets. </span> <span> What if the luxury homes deal was better? </span> </span> <span> <span> Having the extra park space will make the town to be more family and pet friendly. </span> <span> What about the cost to build it? </span> </span> <span> <span> Could attract more families, along with their dogs. </span> <span> Money for school expansion will be lost. </span> </span> </span></span>

 

 

 

 

<span>9.  </span>How could the town government counteract the negative externalities<span>? (3 points)  </span>

<span>a.           </span><span>The building of the park will be used by over 7,000 registered dogs and their owners, and that means that there will be much money made.</span>

3 0
3 years ago
Read 2 more answers
Other questions:
  • True or False: If you ride a bicycle in Florida, your bicycle is legally defined as a vehicle.
    9·2 answers
  • Not even gonna lie I'm kinda really stupid so these next 5 questions are really hard for me and i would GREATLY appreciate it if
    11·1 answer
  • Air bags are always safe
    6·2 answers
  • Many collages review students scores on the or before deciding whether to offer them addmission
    14·1 answer
  • Pls help Pls need help FAST 70 Points
    7·1 answer
  • What are the main functions of the human skeleton? A exchange of gases B support and movement C sensing the environment D digest
    14·1 answer
  • In scholarly or research work, how is the credibility of the writing usually proven?
    9·1 answer
  • What is a better phrases to say then on the bright side
    9·2 answers
  • Which career pathway usually works for the city, county, state, or federal governments and is compensated with good benefits?
    15·2 answers
  • Why is nuclear fusion not a viable source of energy for humans/society?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!