Homework Answers
Ans:
P(T<=t)=1-exp(-t/2.5)
1)P(T>4)=exp(-4/2.5)=0.2019
2)
P(T>M)=0.001
exp(-M/2.5)=0.001
M=-2.5*ln(0.001)
M=17.27 minutes
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