Break downs occur on a 20-years-old car with rate λ= 0.5 breakdowns/week. the owner of the car is planning to have a trip on his car for 2 weeks. what is the probability that there will be no breakdown on his car in the trip? [ the rate = ? per two weeks]

0.3679

Step-by-step explanation:

The formula for Poisson distribution  :-

Let x be the number of breakdowns.

Given : The rate of breakdown per week :  0.5

Then , for 2 weeks period the number of breakdowns =

Then , the probability that there will be no breakdown on his car in the trip is given by :-

Hence, the required probability : 0.3679

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm