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
Levart [38]
3 years ago
9

A shipping company handles containers in three different sizes: (1) 27 ft3 (3 × 3 × 3), (2) 125 ft3, and (3) 512 ft3. Let Xi (i

= 1, 2, 3) denote the number of type i containers shipped during a given week. With μi = E(Xi) and σi2 = V(Xi), suppose that the mean values and standard deviations are as follows: ?1 = 230 ?2 = 240 ?3 = 120?1 = 11 ?2 = 12 ?3 = 7(a) Assuming that X1, X2, X3 are independent, calculate the expected value and variance of the total volume shipped. [Hint: Volume = 27X1 + 125X2 + 512X3.]expected value ft3variance ft6(b) Would your calculations necessarily be correct if the Xi's were not independent? Explain.The expected value would not be correct, but the variance would be correct. Neither the expected value nor the variance would be correct. The expected value would be correct, but the variance would not be correct.Both the expected value and the variance would be correct.
Mathematics
1 answer:
inysia [295]3 years ago
6 0

Answer:

Sorry I have no idea lol. I hope you find your answer soon.

You might be interested in
If (a, -5) is a solution to the equation 3a = -2B - 7, what is a?
Andrew [12]
I think what you need to do is make B = -5
3a = -2(-5) - 7
3a = 10 - 7
3a = 3
a = 1
3 0
3 years ago
Please help need to know the answer to this supposedly is 9 + (9x36) 333 but I don’t get it
Ahat [919]

Answer:

459

Step-by-step explanation:

First line:

clock showing 9 o'clock + clock showing 9 o'clock + clock showing 3 o'clock = 9 + 9 + 3 = 21

Second line:

The calculators look exactly the same.

3 * calculators = 30

1 calculator = 10

Third line:

1 bulb + 1 bulb - 1 bulb = 15

Since 1 bulb - 1 bulb = 0, we have 1 bulb + 0 = 15, or

1 bulb = 15

Last line:

Clock showing 9 o'clock = 9

Calculator = 10

3 bulbs = 3 * 15 = 45

Total = 9 + 10 * 45 = 9 + 450 = 459

7 0
2 years ago
What is the value of 5(a + b) when a=1 and b=6 ​
lana [24]

Answer: 35

Step-by-step explanation:

We substitute a for 1 and b for 6.

5(1+6)=5(7)=35

5 0
3 years ago
I need help plzz
sesenic [268]

Answer:

3200

Step-by-step explanation:

8 0
3 years ago
How do you simplify (-1 - 3 √(3) × (-1 - 3 √(3)
harina [27]

Answer:

4 + 6√(3)

Step-by-step explanation:

Two right parentheses seem to be missing here.  I think you meant:

(-1 - 3 √(3) ) × (-1 - 3 √(3) )

and this is the square of a binomial.  The resulting square is:

1 + 6√3 + 3, or 4 + 6√(3)

5 0
2 years ago
Other questions:
  • 600+15y=750.<br> solve for y<br> can I as well have the way you solved for y?
    15·2 answers
  • In a lecture demonstration, an object is suspended from a spring scale which reads 8N when the object is in air. The object is t
    10·1 answer
  • Which expression has a value that is more than its base?
    15·1 answer
  • What is the y-intercept of the line whose equation is y=-x-2? Select one: a. -2 b. 1 c. 2 d. -1
    14·1 answer
  • Find the domain of <br> 3 √2t-1
    11·1 answer
  • The product of ten and a number is greater than the difference of four times the number and two
    6·1 answer
  • The two lines represented by the equations below are graphed on a coordinate plane. Which statement best describes
    13·1 answer
  • <img src="https://tex.z-dn.net/?f=7x-3%28x-6%29%3D30" id="TexFormula1" title="7x-3(x-6)=30" alt="7x-3(x-6)=30" align="absmiddle"
    7·1 answer
  • How many degrees is angle x?
    11·1 answer
  • PLEASE HELP. I don’t get it at all and I’d really appreciate it. Thank you!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!