Re: Probability

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: Probability
From: Andrew Kolbus <sugarhi114@YAHOO.COM>
Date: Tue, 6 Mar 2001 15:54:03 -0500
Importance: Normal
In-Reply-To: <001c01c0a669$ff596740$c902000a@shtchsmuthler>
Reply-To: sugarhi114@yahoo.com

Very interesting. I am not sure, but now I am curious. I can see the problem with yours, however. You are trying to answer a different problem, as you probably know already. I have a question for you, Steve. I am wondering why you said you got 64%, when your start gets you 9%. Could you please post your other steps to get that answer?

Andrew Kolbus

Churchill High School, MI

-----Original Message-----
From: Open discussion of TI Graphing Calculators [mailto:CALC-TI@LISTS.PPP.TI.COM]On Behalf Of Steve Muthler
Sent: Tuesday, March 06, 2001 1:20 PM
To: CALC-TI@LISTS.PPP.TI.COM
Subject: Probability

I've been wracking my brain (?!?) and can't come up with the answer to a probability problem:

In a certain country, 55% of babies born are boys. 10 babies are born on Jan. 1. What is the probability that exactly 4 of them are boys?

The answer is 16%, but I have only come up with 64%.

The way I tried was this: the probability of the first four being boys is (.55)(.55)(.55)(.55) or .0915.

Now what?

Steve Muthler

Jersey Shore (PA) High School

References:

Probability

From: Steve Muthler <smuthler@JSASD.K12.PA.US>