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January 30, 2015

January 30, 2015

Posted by **Anonymous** on Wednesday, February 9, 2011 at 7:35am.

What is the probability that at least one policy will have emergency road service?

Answer

0.6242

0.3758

0.8926

0.2684

0.1074

What is the expected number of policies having emergency road service?

Answer

3.5

8.0

1.6

2.0

5.0

I couldn't figure out the second part. for the first one i got .3758

- Math?? -
**Writeacher**, Wednesday, February 9, 2011 at 8:01amPlease type your

__subject__in the**School Subject**box. Any other words,__including obscure abbreviations__, are likely to delay responses from a teacher who knows that subject well.

- probability -
**drwls**, Wednesday, February 9, 2011 at 8:04amHow did you get 0.3748 for part 1? The correct answer is 1 - (0.8)^10

One minus the probability that none of the ten have roadside coverage

The expecation value is the single-policy probabiity x (number of policies). That product is 2.

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