In earned value management, schedule variance is defined as:
A) The difference between the earned value and the actual cost.
B) The difference between the earned value and the planned value.
C) The difference between the actual cost and the planned value.
D) The difference between the cost and schedule performance indices multiplied by the budgeted cost at completion.
B
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A(n) ________ is a small group of respondents interviewed by a moderator using a loosely structured format in which participants are encouraged to express their views and comment on the views of others in the group.
A. ethnic group B. focus group C. online research community D. customer advisory council E. demogroup
Assume that your cousin holds just one stock, Eastman Chemical Bonding (ECB), which he thinks has very little risk. You agree that the stock is relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data for Wilder's Creations and Buildings (WCB). Both companies have had less variability than most other stocks over the past 5 years. Measured by the standard deviation of returns, by how much would your cousin's risk have been reduced if he had held a portfolio consisting of 60% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.)
Year ECB WCB 2011 40.00% 40.00% 2012 ?10.00% 15.00% 2013 35.00% ?5.00% 2014 ?5.00% ?10.00% 2015 15.00% 35.00% Average return = 15.00% 15.00% Standard deviation = 22.64% 22.64% A. 3.29% B. 3.46% C. 3.65% D. 3.84% E. 4.03%
Cars arrive at a parking lot entrance at the rate of 20 per hour. The average time to get a ticket and proceed to a parking space is two minutes. There are two lot attendants at the current time
The Poisson and exponential distribution appear to be relevant in this situation. (a) What is the probability that an approaching auto must wait? (b) What is the average waiting time? (c) What is the average number of autos waiting to enter the garage?
For an M/M/1 queuing system, if the service rate, µ, is doubled, the average wait in the system, W, is cut in half
a. True b. False Indicate whether the statement is true or false