SOLUTION: On National Public Radio, the Weekend edition program on Sunday, September 7, 1991, the following probability problem was posed: Given a certain number of balls, of which some are

Question 108462This question is from textbook
: On National Public Radio, the Weekend edition program on Sunday, September 7, 1991, the following probability problem was posed: Given a certain number of balls, of which some are blue, pick 5 at random. The probability that 5 are blue is 1/2. Determine the original number of balls and decide how many are blue. This question is from textbook

Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
9 BLUE OUT OF 10 COMES VERY CLOSE:
9/10*8/9*7/8*6/7*5/6
.9*.88889*.875*.857*.8333=.4999897 PROBABILITY THAT ALL FIVE WILL BE BLUE.

RELATED QUESTIONS
Question is: On National Public Radio, the Weekend Edition program on Sunday,... (answered by Fombitz)

Suppose the probability of rain on Saturday is 25% and the probability of rain on Sunday... (answered by richard1234)

There is a 50% chance of rain on Saturday and a 50% chance of rain on Sunday. What is the (answered by stanbon)

Over the weekend, Peter earned $48 in tips. If he earned $12 more on Saturday than... (answered by ewatrrr)

Please help me solve this word problem: in 1991, the average cost of attending a... (answered by Boreal,Theo)

Over the weekend, Mario bicycled 72 miles. On Sunday he rode 7 miles more than two-thirds (answered by ewatrrr)

Peter delivers 110 newspapers on the weekend. He delivers 20 more newspapers on Sunday... (answered by elima)

what is the probability that a person chosen at random was born on a SAturday or Sunday? (answered by Edwin McCravy)

You work weekends, Friday through sunday, 9:00am to 5:00pm with a one hour lunch break.... (answered by macston,stanbon)