Weibull Distribution
1) Let a be the time you have to wait until the next customer arrives at a store (in minutes). Assume the mean of a is 1.000 minute).
Determine the pdf for the time it takes for three customers to arrive (the sum of three exponential distributions)
Determine a Weibill distribution to approximate this pdf.
GIVEN THAT:-
According to the question we have that
"a" is the time take for the next coustemer to arrive to the store and the time is measured in minutes here ,
now here that
TO FIND :- The pdf for the time it takes for the three customers to arrive
so now we get that ,.
S =X1+ X2+ X3
S follow gamma distribution with parameter k = 3 and theta = 1
pdf = x^(3-1) e^(-x) / 2!
= e^(-x) * x^2/2
the above is the pdf tsken for the three customers to enter the shop
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