Do you dislike waiting in line? supermarket chain kroger has used computer simulation and information technology to reduce the a
verage waiting time for customers at stores. using a new system called quevision, which allows kroger to better predict when shoppers will be checking out, the company was able to decrease average customer waiting time to just seconds (informationweek website and the wall street journal website, january , ).
1 answer:
Answer:
Part a:
Show the probability density function for the waiting times at Kroger, assuming they are exponentially distributed.
Solution:
Probability density function f(x) = (1/ )*e-x/ = (1/26)*e-x/26 (result)
Part b:
Calculate the probability that a customer waits between 15 and 30 seconds.
Solution:
0.2462
Part c:
Determine the probability that a customer must wait longer than 2 minutes.
Solution:
0.0099
Explanation:
All calculations are included.
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Answer:
a. -1.25
b. -1.25
Explanation:
Price elasticity measures how demand varies with price fluctuations.
The formula is:
= % change in Quantity / % change in Price
a. If the price moves from $1.00 to $1.50, the elasticity of demand will be:
% change in Quantity calculated using the midpoint method;
% Change in Price calculated with the midpoint formula
=-1.25
b. If the price decreases from $1.50 to $1.00, the elasticity of demand is:
% change in Quantity calculated using the midpoint formula;
% Change in Price calculated using the midpoint formula
= 0.5/-0.4
= -1.25