Homework Help: Math

Posted by Courtney on Wednesday, December 8, 2010 at 12:16am.

Losing your bags during airline travel is not all that uncommon. Recently, an airline was sited for losing customers' baggage 8% of the time.

A test is conducted by randomly selecting 14 customers for that airline and observing whether they had lost their baggage. Provide answers to at least 6 decimal places for the following:

(a) The probability that exactly 2 customers lost baggage is .

(b) The probability that at least 12 customers lost baggage is

Math - Reiny, Wednesday, December 8, 2010 at 8:14am
prob of losing = 8/100 = 2/25
prob of not losing it = 23/25

prob(2 out of 14losing it) = C(14,2) (2/25)^2 (23/25)^12 = appr .214

b) prob (at least 12)
= Prob(12) + prob(13) + prob(14)
= C(14,12) (2/25)^12 (23/25)^2 + .....
Math - Courtney, Thursday, December 9, 2010 at 1:39pm
I do not understand the second part how do i get the second part?
Math - A, Thursday, December 9, 2010 at 6:44pm
Doesn't the second part yield a value greater than 1? Isn't probability always supposed to equal 1?
Math - courtney, Thursday, December 9, 2010 at 6:57pm
i have no clue honestly i tried doing the second part B and i do not get it?

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