Question

In: Statistics and Probability

Case 1 Quantitative Analysis Ashley Miller has three major routes to commute to work: take RiverView...

Case 1 Quantitative Analysis

Ashley Miller has three major routes to commute to work: take RiverView Street the entire way, take several back streets, or use the expressway. The traffic patterns are pretty complex. Under good conditions, RiverView Street is the fastest route; however, when it is congested, one of the other routes is usually preferable. Over the past two months, Ashley has tried each route several times under different traffic conditions. Her travel time to work (in minutes) is summarized in the following table.

STATES OF NATURE

DECISION ALTERNATIVES

  

NO TRAFFIC CONGESTION (minutes)

MILD TRAFFIC CONGESTION (minutes)

   

SEVERE TRAFFIC CONGESTION (minutes)

RiverView Street

  

15

  

30

   

45

   

Back roads

20

25

35

Expressway

30

  

30

  

30

  

1. If nothing is known about the demand probabilities,

a. Based on Conservative Approach, which route should Ashley choose to commute to work?

b. Using the Minimax Regret Approach, create the Opportunity Loss/Regret Table. What route should Ashley take if she wants to minimize average drive time?

2. Suppose the probabilities for No Traffic Congestion, Mild Traffic Congestion, and Severe Traffic Congestion are 50%, 33%, and 17% respectively,

c. Construct a Decision Tree (draw it neatly by using MS Word/MS Excel Drawing Tool OR if you are drawing it by hand, please a ruler) and solve it using Expected Value Approach. What is the recommended decision alternative?

d. Calculate the Expected Value of the Perfect Information (EVPI)?

Solutions

Expert Solution



Related Solutions

A) A person can take either of two routes to work, through Matteson or Richton Park....
A) A person can take either of two routes to work, through Matteson or Richton Park. Both take on average 35 minutes, and travel times are Normally distributed. But are the variances of the travel times different? A random sample with n = 6 using the Matteson route, and another random sample with n = 7 using the Richton Park route, showed a variance of 40 (units: square minutes) and 30 respectively. To test whether the variances are different, the...
How long does it take to commute from home to​ work? It depends on several factors...
How long does it take to commute from home to​ work? It depends on several factors including the​ route, traffic, and time of departure. These times tend to be fairly close to symmetrical and​ mound-shaped. The data listed below​ (in minutes) is for a random sample of eight trips. Construct a 95​% confidence interval for the population mean time of all such commutes. 26     39     34     44     20     36     31     39 ​A) What is the mean for this set of​...
QUANTITATIVE ANALYSIS: It is advisable to document all your work and calculations as applicable. (1) Consider...
QUANTITATIVE ANALYSIS: It is advisable to document all your work and calculations as applicable. (1) Consider the following account balances in thousands for the Yankee Company for the year ended December 31, 2019: Direct Materials Inventory, Beginning $58,000 Direct Material Inventory, Ending $32,000 Work in Process, Beginning $38,000 Work in Process, Ending $16,000 Finished Goods Inventory, Beginning $29,000 Finished Goods Inventory, Ending $12,000 Direct Materials Purchased $99,000 Direct Labor $94,000 Indirect Labor $14,000 Plant insurance $29,000 Other insurance $18,000 Salaries...
you have three routes to get to work in the morning time is a random variable...
you have three routes to get to work in the morning time is a random variable that follows has the following density function: f (x) = k / x ^ 4, x> 15 e) Calculate the expected value and the variance of time. f) What is the time exceeded only for 10% of the days?
you have three routes to get to work in the morning time is a random variable...
you have three routes to get to work in the morning time is a random variable that follows has the following density function: f (x) = k / x ^ 4, x> 15 a) Find the appropriate value for the constant k and graph the density function. b) Find and graph the cumulative probability function. c) Calculate the probability of arriving in less than 25 minutes. d) What is the probability of arriving in exactly 25 minutes? e) Calculate the...
The commute time to work in the U.S. has a bell shaped distribution with a population...
The commute time to work in the U.S. has a bell shaped distribution with a population mean of 24.4 minutes and a population standard deviation of 6.5 minutes. What percentage of the population has a commute time (do not round answers): between 11.4 minutes and 37.4 minutes, inclusive? 95 less or equal to 11.4 minutes? 3 greater than or equal to 37.4 minutes? 3 greater than or equal to 24.4 minutes? between 11.4 minutes and 30.9 minutes, inclusive? between 17.9...
1. Give and example of a case that has both a categorical and quantitative variable someone...
1. Give and example of a case that has both a categorical and quantitative variable someone might be interested in examining. 2. Describe an instance where a graph/chart/histogram/etc. or a median/mean given that was misleading and did not reveal the whole situation.
1. In a random sample of 8 ​people, the mean commute time to work was 34.534.5...
1. In a random sample of 8 ​people, the mean commute time to work was 34.534.5 minutes and the standard deviation was 7.27.2 minutes. A 9090​% confidence interval using the​ t-distribution was calculated to be left parenthesis 29.7 comma 39.3 right parenthesis(29.7,39.3). After researching commute times to​ work, it was found that the population standard deviation is 9.19.1 minutes. Find the margin of error and construct a 9090​% confidence interval using the standard normal distribution with the appropriate calculations for...
1. In a random sample of 23 people, the mean commute time to work was 32.2...
1. In a random sample of 23 people, the mean commute time to work was 32.2 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean mu. What is the margin of error of mu? Interpret the results. Round to one decimal place as needed.
Stephanie has 3 ways to commute to work - driving, subway, or train. The chart below...
Stephanie has 3 ways to commute to work - driving, subway, or train. The chart below shows how long it takes her to get to work depending on the weather: Decision Clear Skies Raining Snowing Driving 15 30 45 Subway 20 25 35 Train 30 30 30 Suppose the probabilities for clear skies is 50%, rain is 33% and snow is 17%: Construct a decision tree and solve it using Expected Value Approach. What is the recommended decision alternative?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT