Odds in probability

igiul

If a checker @ a grocery store checks out 25 customers per hour, what are the odds that he sees 6 orders whose orders end up as a perfect dollar amount ( $25.00,$ 6.00 etc) in 2 hours?

**Posted:** Mon Nov 02, 2009 8:34 pm

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my blawg
$A_f=\pi r^2(2r^2+\alpha^2+\beta^2)$

Jebus McAzn · New Member Offline Joined: 03 Oct 2009 Posts: 18

There isn't any information about the products in the store; it's impossible to determine the price of the items. Is that the whole problem?

**Posted:** Tue Nov 03, 2009 5:52 pm

JBL

Presumably you're meant to assume that the number of cents in a random purchase is uniformly distributed, i.e., the probability that a given purchase comes to an even-dollar amount is exactly $\frac{1}{100}$ .

**Posted:** Tue Nov 03, 2009 6:55 pm

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Joel
Hi Deeps! <3

igiul

However, by that logic you should see 1 such order every 4 hours. What are the odds that 6 appear within 2 hours? 12:1?

**Posted:** Tue Nov 03, 2009 9:43 pm

_________________
my blawg
$A_f=\pi r^2(2r^2+\alpha^2+\beta^2)$