isabellainksow87vn

20.02.2020 • 

Mathematics

A shipping company handles containers in three different sizes: (1) 27 ft3 (3 Ý 3 Ý 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?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?

Ответ:

ashleymstep15

08.08.2022

Mathematics

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Third one

Step-by-step explanation:

The circumference of a circle is given by the formula:

P = d*π d is the diameter

P= 20π ⇒ d*π = 20π ⇒ d= 20

The volume of a sphere is given by the formula:

V = *π*r³ r is the radius wich is d/2r = 20/2 = 10

V= *π*10³

V= 1333.33*π

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