Question

URGENT!

Your cell phone is in serious need of repair. You have estimated that the breakdowns occur on average 2 times per month. What is the probability that time until second breakdown exceeds 3 weeks?

Answer 1

Answer:-

Given That:-

Your cell phone is in serious need of repair. You have estimated that the breakdowns occur on average 2 times per month.

What is the probability that time until second breakdown exceeds 3 weeks?

The probability that time until second breakdown exceeds 3 weeks

Here the no.of break downs follows a poisson distribution with average of 2 times per month ,then

for 1 month

i.e., for 30 days

for 1 day

Now the time between two break downs follows a exponential distribution

then the cdf is

P(exceed 3 weeks)=P(exceed 21 days)