Question: Same as the last need this done soon. Just circle the answers in order please! A college-run cafeteria in a student dorm offers a wide
Same as the last need this done soon. Just circle the answers in order please!
A college-run cafeteria in a student dorm offers a wide variety of meal
options. Assume that the calorie count per meal varies from 400 to 900 calories
and that all of these calorie outcomes are equally likely.
(1) What is the support for the distribution for X = calorie count
(a) XU XL = 100 calories (c) XU XL = 500 calories
(b) XU XL = 400 calories (d) XU XL = 900 calories
(2) What is the probability density function for this process
(a) P(X) = 1/500 = .002 (c) P(X) = 1/400 = .025
(b) P(X) = 1/1,000 = .001 (d) P(X) = 1/900 = .011
(3) In predicting the next 100 meals, what proportion (%) and count are
expected to have more than 700 calories?
(a) 10 & 10% (c) 25 & 25% (e) 40 & 40%
(b) 20 & 20% (d) 30 & 30%
(4) What is the probability that any particular meal has a calorie count that is
less than 500 calories?
(a) 10% (c) 25% (e) 40%
(b) 20% (d) 30%
(5) What is the probability that any particular meal has a calorie count
between 500 and 800 calories?
(a) 30% (c) 50% (e) 80%
(b) 40% (d) 60%
(6) For someone very anxious about gaining weight, what is the likelihood
that one of the meals will exceed 1,200 calories?
(a) 0% (b) 5% (c) 10% (d) 20%
Chapter 6-1: The Uniform Probability Model QUIZ
Upon arrival at the main concourse of an airport, consider the full processing
and waiting time until a passenger is physically seated on their airplane. This
would include the needed time to obtain a boarding pass, check luggage, pass
security screening, walk to the flight gate, board the plane, advance to ones
assigned seat and store overhead luggage. Assume that this full passenger
processing time has a Uniform distribution across a time interval with equally
likely outcomes ranging from 40 minutes to 120 minutes. Define:
X = length of full airport passenger processing time
X ~ UNI[ XL = 40 ; XU = 120 }
[Q#1] What is the Support the range of possible outcome values for
this Uniform distribution? What is: XU XL = ?
(a) 120 minutes (c) 60 minutes
(b) 80 minutes (d) 40 minutes
[Q#2] What is the Probability Density Function (pdf) for this distribution?
(a) P(X) = .050 (c) P(X) = .020 (e) P(X) = .005
(b) P(X) = .040 (d) P(X) = .0125
[Q#3] How likely is it that the processing time for a flight will exceed
X=90 minutes? Alternatively, for a frequent flier, what is the expected
proportion of flights that will equal or exceed 90 minutes?
What is the probability: Prob( X >= 90 | X ~ UNI ; XL=40 ; XU=120 ) = ?
(a) 0% (c) 30% (e) 50%
(b) 25% (d) 37.5%
[Q#4] How likely is it that the processing time for a flight will be less than
X=60 minutes ( 1 hour ) ? Alternatively, for a frequent flier, what is the
expected proportion of flights that will equal or fall below 60 minutes?
What is the probability: Prob( X <= 60 | X ~ UNI ; XL=40 ; XU=120 ) = ?
(a) 0% (c) 30% (e) 50%
(b) 25% (d) 37.5%
[Q#5] How likely is that the processing time for a next flight will require at
least Xa=60 minutes but no more than Xb=100 minutes? Alternatively,
for a frequent flier, what is the expected proportion of flights that will
fall within this 40 minute range? What is the probability:
Prob( 60 <= X <= 100 | X ~ UNI ; XL=40 ; XU=120 ) = ?
(a) 0% (c) 30% (e) 50%
(b) 25% (d) 37.5%
[Q#6] How likely is that the full passenger processing time will require
less than 30 minutes? Alternatively, for a frequent flier, what is the
expected proportion of flights that will take less than 30 minutes?
What is the probability: Prob( X <= 30 | X ~ UNI ; XL=40 ; XU=120 ) = ?
(a) 0% (c) 30% (e) 50%
(b) 25% (d) 37.5%
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