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
labwork [276]
3 years ago
14

The college student senate is sponsoring a spring break Caribbean cruise raffle, with proceeds going to the local homeless shelt

er. A local travel agency donated the cruise, worth an estimated $3000. The students sold 2900 tickets at $5 per ticket. Find the mathematical expectation of a student who purchases 10 tickets.
Mathematics
1 answer:
drek231 [11]3 years ago
8 0

Answer:

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

Step-by-step explanation:

A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:

p=10/2900\approx0.00345

Each ticket cost $5, so he has spent $50 for the 10 tickets.

Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:

E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

You might be interested in
What is 53 and 1/3 as a decimal and please show how to turn it into a decimal
malfutka [58]
Well,
First I would like to explain how to convert a mixed number or fraction into a decimal.
1. First if it's a mixed number change it into an improper fraction.
2. After that divide the numerator by the denominator.
3. Your finished as simple as that.
NOW FOR THE ACTUAL ANSWER
well I turned 53 1/3 into an improper fraction which came out to be 160/3. After the division the decimal came to be 53.3333(etc)
I did it in the calculator and everything so I'm almost positive I did this correctly haha)
I hope I helped.
And I really enjoyed answering this since I knew you weren't just looking for an answer but for the reason behind it and how to do it hahah.
3 0
2 years ago
Read 2 more answers
A tree initially measured 18 feet tall. Over the next 312 years, it grew to a final height of 3512 feet. During those 312 years,
Leni [432]

Answer:

Average growth= 11.20 feet

Step-by-step explanation:

<u>First, we need to calculate the total growth during those 312 years:</u>

<u></u>

Total growth= 3,512 - 18

Total growth= 3,494 feet

<u>Now, the average growth:</u>

<u>Average growth= total growth / number of years</u>

Average growth= 3,494 / 312

Average growth= 11.20 feet

8 0
3 years ago
Help me with question plz
rewona [7]

Answer:

41

Step-by-step explanation:

What I did was I took 180, 85 and 54 and subtracted them to get 41 if it is wrong i am so very sorry

7 0
3 years ago
Read 2 more answers
astronomers measure large distances in light years one light year is the distance that light can travel in one year or approxima
sveticcg [70]
What you can do in this case is the following rule of three to find the result:
 1 light year ---> 5.88 * 10 ^ 12 miles
 3.2 * 10 ^ 2 light year ---> x
 Clearing x we have:
 x = ((3.2 * 10 ^ 2) / (1)) * (5.88 * 10 ^ 12)
 x = 1.88 * 10 ^ 15 miles
 answer:
 In scientific notation, approximately it is 1.88 * 10 ^ 15 miles
8 0
3 years ago
Can someone help me with this one
bonufazy [111]

Answer:

x(2x+1)(x-2)

Step-by-step explanation:

x(2x^2-3x-2)

x(2x^2-4x+x-2)

x[2x(x-2)+1(x-2)]

x(2x+1)(x-2)

3 0
3 years ago
Other questions:
  • Write an equation of the line parallel to 3x+y=7 that goes from (-3,5) in slope intercept form.
    12·1 answer
  • The final velocity (v) is given by the formula v = v0 + at, where v0 is initial velocity, v is final velocity, a is acceleration
    8·1 answer
  • How do I round 38.25 to a whole number?
    7·1 answer
  • 2. Which is greater?
    11·1 answer
  • 35. What is -64.4 ÷ (-3.22)?​
    10·2 answers
  • 2d^3+3c^2+5 d equals 4 and c equals 3
    10·2 answers
  • wires are attached to a pole to make it more secure. the diagram shows one of those wires having a length of 220 feet the angle
    15·2 answers
  • PLEASE HELP!!!<br> select the equivalent expression
    5·1 answer
  • Jonathan opened a savings account with $5500 and made no further
    11·2 answers
  • A train traveled 300 miles in 5 hours. find its rate of speed in miles per hour.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!