On a summer day it says that the probability that a hot dog stand will sell out of hot dogs is 3/5

find at least 70 of 100 days the hotdogs are sold out

I used 1-Binomcdf(100, (3/5), 70) then this gives me an answer that is not a choice.

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- May 28th 2010, 03:55 AMIDontunderstandP-value
On a summer day it says that the probability that a hot dog stand will sell out of hot dogs is 3/5

find at least 70 of 100 days the hotdogs are sold out

I used 1-Binomcdf(100, (3/5), 70) then this gives me an answer that is not a choice. - May 28th 2010, 04:52 AMmr fantastic
- May 28th 2010, 11:05 PMmatheagle
most likely you're expected to approximate this with a normal distribution with

$\displaystyle P(Normal >69.5)$ - May 28th 2010, 11:16 PMmr fantastic
- May 28th 2010, 11:51 PMmatheagle
I don't own any of these calculators, so I had no idea what that meant.

The most scientific one I use is a TI-30.

I had a fancier one that did all these percentiles, but I gave that to a grad student last year as a graduation gift.

I just googled binomial calculator and came across

Binomial Probability Calculator

These can be found all over the net.