Thursday

November 27, 2014

November 27, 2014

Posted by **MoJo** on Thursday, January 24, 2008 at 11:03am.

a. What is the probability that this year will be crash free?

b. If there is a crash, what is the probability that there will be more than two?

- Stats -
**drwls**, Thursday, January 24, 2008 at 11:12amWhat is the question? Are they asking for the probabilities of 0, 1, 2, 3 etc per year?

- Stats -
**MoJo**, Thursday, January 24, 2008 at 12:17pma. What is the probability that this year will be crash free?

b. If there is a crash, what is the probability that there will be more than 2?

- Stats -
**Damon**, Thursday, January 24, 2008 at 4:30pmProbability of zero = 1.1^0 e^-1.1 / 0!

= (1/1 )e^-1.1 = .332

of 1 = 1.1^1 (.332)/1! = .365

of 2 = 1.1^2 (.332)/2! = .201

The sum of the probabilities of zero, 1 and 2 is

.898

SO, the probability of more than two is

1 - .898 = .102

ten percent. That is scary.

**Answer this Question**

**Related Questions**

statistics - According to the National Transportation Safety Board, 10% of all ...

statistics - According to the National Transportation Safety Board, 10% of all ...

statistics - The Wall Street Journal reported that automobile crashes cost the ...

Statistics PLEASE HELP ME! - The Wall Street Journal reported that automobile ...

math - I calculated the average number of crashes over a 240 week period to be ....

Probability and Statistics - The major would like to estimate the mean number of...

statistics - Suppose that the number of accidents occurring in an industrial ...

Stats Anyone? - The first-year retention rate is the percentage of entering ...

Stats - In 1898 L. J. Bortkiewicz published a book entitled The Law of Small ...

Statistics-Probability - Data collected on volcanic eruptions give a mean time ...