Maurice Tutor

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Expertise:
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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 3 Days Ago
Questions Answered: 66690
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 16 Feb 2018 My Price 7.00

econ- omy brand of gasoline

27.   A shipping company handles containers in three dif- ferent sizes: (1) 27 ft3 (3 X 3 X 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

mi  = E(Xi) and s2  = V1X 2 , suppose that the mean

 

29.   Five automobiles of the same type are to be driven on a 300-mile trip. The rst two will use an econ- omy brand of gasoline, and the other three will use a name brand. Let X1, X2, X3, X4, and X5 be the ob- served fuel ef ciencies (mpg) for the ve cars. Sup-

 

i                   i

 

values and standard deviations are as follows:

 

m1 = 200

m2 = 250

m3 = 100

s1 = 10

s2 = 12

s3 = 8

a.    Assuming that X1, X2, X3 are independent, calculate the expected value and variance of thepose these variables are independent and normally distributed with m1 = m2 = 20, m3 = m4 = m5 = 21, and s2 = 4 for the economy brand and 3.5 for the name brand. De ne an rv Y by

 

X1 + X2            X3 + X4 + X5 Y =   -

 

total volume shipped. [Hint: Volume = 27X1 +                                  2                      3

125X2 + 512X3.]

 

b.   Would your calculations necessarily be correct if the Xi s were not independent? Explain.

so that Y is a measure of the difference in ef ciency

3
 

2
 

5
 

between    economy    gas    and    name-brand    gas. Compute P(0 Y) and P(-1 Y 1). (Hint: Y =

 

Answers

Maurice Tutor
(5)
Status NEW Posted 16 Feb 2018 08:02 PM My Price 7.00

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