Posted by **penny lane** on Tuesday, May 17, 2011 at 9:52pm.

I am preparing for a chapter test in my prob/stat class and since my teacher no longer cares about our class and the textbook is as confusing as a foriegn languaga, i am in need of help. i am trying to review an old quiz ao here is one of the questions.

the probability that a costomer selects 1,2,3,4 or 5 items at a convenience store are 3.02,.012,.023,.018 and.015, respectively.

find P(X>3.5)

find P(X<5)

- probability and statistics. -
**TutorCat**, Wednesday, May 18, 2011 at 1:03am
I think there's a mistake with the probabilities were given. 1) probabilities can't be >1 (you get greater than 100% chance). 2) the probabilities don't add up to 1

here is what I think they should be:

.32, .12, .23, .18, .15

P(x>3.5) = probability that a customer selects more than 3.5 items = p(4) + p(5) = .18 + .15

you can do the other one by yourself.

- probability and statistics. -
**Anonymous**, Monday, January 14, 2013 at 11:53am
23

## Answer this Question

## Related Questions

- English - Five sentence paragraph. Preparing for a test should start the first ...
- MDM4UO - A teacher provides pizza for his class if they earn an a average on any...
- Check answers please Statistics - Suppose that each student in stat. has a 9% ...
- statistics - this is a problem in my statistics class, and I am lost to me, it ...
- algebra - how do I help my son answer this question/ cary spent 1/3 of his class...
- Chemistry - Our class did an expeiment of adding sodium carbonate and calcium ...
- math - the probabilities that 3 friends A,B andC pass a driving test are1/3,1/4,...
- English - 1. Teacher shake me by the shoulder when I am sleeping in class. 2. ...
- Science - A science teacher was curious to see whether offering money for good ...
- Statistics - 18. The Intelligence Quotient (IQ) test scores are normally ...

More Related Questions