Question

1) It is assumed that the number of damage to a car is poisson distributed with an average of 0.5 damage per year (365 days).
You are thinking of changing car every 3 years. What is the probability that you have no damage to the car after 3 years (state the answer with 3 decimal places)?

2) Calculate a 90% confidence interval for the mean of the following sample:

25.6

25

29.1

21.7

23.7

23.8

24

27.4

3) (It seems like i haven gotten the full description of the exercise, although thats what i got)

The error rate of a process is binomially distributed.
A sample of 10 items with a defect rate of 10% is selected.
Calculate the standard deviation in the sample?
Calculate the mean in the sample?
(enter the answer with 2 decimal places)

Answer 1

Solution: Here concept of Poisson distribution is used.