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
LuckyWell [14K]
2 years ago
9

A grab bag contains 12 packages worth $.70 each, 15 packages $.40 cents each, and 25 packages worth $.30 each. what is the expec

ted value if you have to pay $.50 to pick one package at random?
group of answer choices

$0.47

-$0.08

$0.00

$0.01
Mathematics
1 answer:
Salsk061 [2.6K]2 years ago
8 0

The expected value of the discrete distribution, if you have to pay $.50 to pick one package at random, is of -$0.08.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

For this problem, considering the cost of $0.5, the distribution is given as follows:

  • P(X = 0.2) = 12/(12 + 15 + 23) = 12/50 = 0.24.
  • P(X = -0.1) = 15/(12 + 15 + 23) = 15/50 = 0.3.
  • P(X = -0.2) = 23/(12 + 15 + 23) = 23/50 = 0.46.

Hence the expected value is given by:

E(X) = 0.2 x 0.24 - 0.3 x 0.1 - 0.2 x 0.46 = -$0.08.

More can be learned about the expected value of a discrete distribution at brainly.com/question/13008984

#SPJ1

You might be interested in
Bao is driving to a concert and needs to pay for parking. There is an automatic fee of
aivan3 [116]

Answer:

16

Step-by-step explanation:

6+2(t) --> 6+2(5) --> 6+10=16

7 0
2 years ago
The sum of 2 numbers is 28. One number is 5 less than twice the other number. What are the numbers?
suter [353]
28 = x + (2x - 5)
28 = 3x - 5
+5 +5
33 = 3x
/3 /3
11 = x


On number is 11, the other is 17.

Check:
11(2)=22-5=17
6 0
2 years ago
-2 and 2 are...... (check all that apply)
bonufazy [111]

Answer:

A,B,D

Step-by-step explanation:

3 0
2 years ago
I need an answer asap thank you
AysviL [449]

Answer:

the second one is youre answer

Step-by-step explanation:

6 0
3 years ago
Given the complex number z_1=3\big(\cos \frac{14\pi}{15} +i\sin \frac{14\pi}{15}\big)z 1 ​ =3(cos 15 14π ​ +isin 15 14π ​ ) and
mars1129 [50]

The product of <em>z₁ =</em> 3 · (cos 14π/15 + i · sin 14π/15) and <em>z₂ =</em> 3 √3 · (cos 11π/15 + i · sin 11π/15) in <em>rectangular</em> form with fully simplified expressions is <em>z₁ · z₂ =</em> 7.794 - i · 13.5.

<h3>How to determine the product of two complex numbers</h3>

Let be two numbers of the form <em>z = a + i · b</em>, where <em>i =</em> √-1, the product of two of these numbers in <em>rectangular</em> form is described by the following formula:

<em>z₁ · z₂ = (a + i · b) · (c + i · d) = (a · c - b · d) + i · (a · d + b · c)</em>   (1)

If we know that a = 3 · cos 14π/15, b = 3 · sin 14π/15, c = 3√3 · cos 11π/15, d = 3√3 · sin 11π/15, then the result in rectangular form is:

<em>z₁ · z₂ =</em> 7.794 - i · 13.5

The product of <em>z₁ =</em> 3 · (cos 14π/15 + i · sin 14π/15) and <em>z₂ =</em> 3 √3 · (cos 11π/15 + i · sin 11π/15) in <em>rectangular</em> form with fully simplified expressions is <em>z₁ · z₂ =</em> 7.794 - i · 13.5. \blacksquare

<h3>Remark</h3>

The statement presents typing mistakes and is poorly formatted, the correct form is introduced below:

<em>Given the complex number z₁ = 3 · (cos 14π/15 + i · sin 14π/15) and z₂ = 3 √3 · (cos 11π/15 + i · sin 11π/15), express the result of z₁ · z₂ in rectangular form with fully simplified fractions and radicals.</em>

<em />

To learn more on complex numbers, we kindly invite to check this verified question: brainly.com/question/10251853

8 0
2 years ago
Other questions:
  • Relate the value is between the 1s in the number 115,093,628
    10·1 answer
  • 17*7! Will mark brainliest
    9·1 answer
  • Proportional Relationship:
    9·1 answer
  • What is 10 and 1/2 times 15 times 25
    7·2 answers
  • Daphne gave away three more than half of her apples. she gave away 17 apples in all. how many apples did daphne have
    12·1 answer
  • How do you do this problem 78 + (72÷9) -3
    7·1 answer
  • Olivia worked a 5-day week for a total of 18 hours. Solve for the average hours she worked per day.​
    6·1 answer
  • Is anyone here familiar with Algebra 1B problems?
    15·1 answer
  • Work out the difference between 77.5 and 2.27​
    13·2 answers
  • Please answer this I need this to bring up my grade! I’ll really appreciate it if you truthfully answered this!!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!