i) Scatter diagram is a plot of a distribution in its ungrouped form on a graph
ii) Bivariate distribution is a distribution of two variables
iii) Positive correlation occurs when movement of one variable in one direction causes the other variable to move in the same direction
iv) Confidence interval is the limit at which a parameter or the linear regression itself is taken to represent a given distribution
v) Autocorrelation occurs when a series? errors or disturbance covariance is not equal to zero so theleast squares estimated are not the best linear unbiased estimates.
Wilfykil answered the question on February 20, 2019 at 08:43
- A research studying the role of stress and its implication on personal life in respect of job change over by low cadre staff, came up...(Solved)
A research studying the role of stress and its implication on personal life in respect of job change over by low cadre staff, came up with the following data. It relates to 30 firms over 3-year period
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Date posted: February 20, 2019. Answers (1)
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Date posted: February 20, 2019. Answers (1)
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Given the following distribution of wages for 500 technicians in motor companies in industrial area.
A technician is chosen from the above group. What is the probability that his wages are?
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ii) Above KSh 6,000
iii) Between KSh 5,000 and KSh 6,000
Date posted: February 20, 2019. Answers (1)
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i) Compound event
ii) Mutually exclusive events
iii) Collective exhaustive events
iv) Equally likely events
v) Conditional probability(Solved)
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i) Compound event
ii) Mutually exclusive events
iii) Collective exhaustive events
iv) Equally likely events
v) Conditional probability
Date posted: February 20, 2019. Answers (1)
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A survey by Marketing Society here in Kenya found out the following buying habits of household air conditioners considered a luxury.
Required:
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ii) Does the survey show that the luxury item is consumed by high-income earners? Show your answer by calculating appropriate measure of skewness
Date posted: February 20, 2019. Answers (1)
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i) Platykurtic versus leptokurtic and mesokurtic.
ii) Coefficient of skewness.
iii) Quartile deviation.(Solved)
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ii) Coefficient of skewness.
iii) Quartile deviation.
Date posted: February 20, 2019. Answers (1)
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Three industries, packaging P, Bakery B, and Flour F are related with the intermediate demand matrix below.
Required:
i)Determine the total output for products of industries P, B and F. (10 marks)
ii) Comment on the total output for industries.
Date posted: February 20, 2019. Answers (1)
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i) Final demand.
ii) Technical coefficients.
iii) Closed model versus open model(Solved)
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i) Final demand.
ii) Technical coefficients.
iii) Closed model versus open model
Date posted: February 20, 2019. Answers (1)
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Lillian Wambugu is the project manager of Jokete Construction Company. The company is bidding a contract to install telephone lines in a small town. It has identified the following activities along with their predecessor restrictions, expected times and worker requirements:
Lillian Wambugu has agreed with the client that the project should be completed in the shortest duration.
Required:
i) Draw a network for the project.
ii) Determine the critical path and the shortest project duration.
iii) Lillian Wambugu will assign a fixed number of workers to the project for its entire duration and so she would like to ensure that the minimum number of workers is assigned and that the project will be completed in 14 weeks. Draw a schedule showing how the project will be completed in 14 weeks
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Date posted: February 20, 2019. Answers (1)
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State four attributes of the Beta distribution which made it to be chosen as representing the distribution of activity times in project evaluation and review technique (PERT).
Date posted: February 20, 2019. Answers (1)
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Date posted: February 20, 2019. Answers (1)
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Required:
i) Determine the shortest time and associated cost to finish this project.
ii) If a penalty of Sh.4,500 must...(Solved)
A small construction project involves the following activities:
Required:
i) Determine the shortest time and associated cost to finish this project.
ii) If a penalty of Sh.4,500 must be charged for every day beyond 12 days, what is the most economical time for completing the project?
Date posted: February 20, 2019. Answers (1)
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Required:
i) How long will it take to finish this project?
ii) Can activity D be delayed without...(Solved)
Consider the following project network and activity times (in weeks)
Required:
i) How long will it take to finish this project?
ii)Can activity D be delayed without delaying the entire project? If so, by how many weeks?
iii)What is the schedule for activity E?
Date posted: February 20, 2019. Answers (1)
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i) Network planning;
ii) Activities;
iii) Events;
iv) Critical path;
v) Float.(Solved)
Explain the following terms used in network analysis:
i) Network planning;
ii) Activities;
iii) Events;
iv) Critical path;
v) Float.
Date posted: February 20, 2019. Answers (1)
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Required:
a) Determine the project?s expected completion time and its critical path.
b) Can activities E and G be...(Solved)
Consider a project which has been modeled as follows:
Required:
a) Determine the project‟s expected completion time and its critical path.
b) Can activities E and G be performed at the same time without delaying the completion of the project?
c) Can one person perform activities A, G and I without delaying the project?
d) By how much time can activities G and L be delayed without delaying the entire project?
e) By how much time would the project be delayed if activity G were delayed by 3 hours and activity L by 4 hours? Explain.
Date posted: February 20, 2019. Answers (1)
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Consider the cost-time estimates for the product development project as given in the table below.
Indirect cost is made up of two components: Fixed cost of $5,000 and a variable cost of $1,000 per week of elapsed time. Also, for each week the project exceeds 17 weeks, an opportunity cost of $2,000 per week is assessed.
Construct a time chart for the minimum total cost schedule.
Date posted: February 20, 2019. Answers (1)
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shown in the table below.(Solved)
Consider the simplified scenario for the development of a consumer product through the market test phase
shown in the table below.
a) Draw the network for this project.
b) Calculate the slacks and interpret their meaning.
c) Determine the critical path and interpret its meaning.
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Date posted: February 20, 2019. Answers (1)
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Consider the two person zero sum game between players A and B given by the following pay-off table:
Required:
i) Using the maximin and minimax values, is it possible to determine the value of the game? Give
reasons.
ii) Use graphical methods to determine optimal mixed strategy for player A and determine the
value of the game.
Date posted: January 23, 2019. Answers (1)
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i) Dominance.
ii) Saddle point
iii) Mixed strategy
iv) Value of the game(Solved)
Define the following terms used in game theory:
i) Dominance.
ii) Saddle point
iii) Mixed strategy
iv) Value of the game
Date posted: January 23, 2019. Answers (1)
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a) Decision making under risk versus uncertainty.
b) Decision trees versus probability trees.
c) Minimax versus maximax criterion.
d) Pure...(Solved)
Explain the following terms as used in decision analysis.
a) Decision making under risk versus uncertainty.
b) Decision trees versus probability trees.
c) Minimax versus maximax criterion.
d) Pure strategy versus mixed strategy games.
e) Games with more than two persons versus non zero-sum games
Date posted: January 23, 2019. Answers (1)