Random Number Generator for Normal Distribution

This is a site Ms. Erwin and I found for finding random numbers using a normal distribution, in case your calculator does not do randNorm.  It will take a little working with, but it is nice.

Enter in your mean, your standard deviation, and choose 100 trials.  Make sure to click Y for displaying results in a table.

When I get home I will look at random.org, which I think has to have some kind of normal distribution generator.

http://www.wessa.net/rwasp_rngnorm.wasp

Amended:

random.org does have a normal distribution random number generator, which worked nice.  The problem I had with it was that it produced the answers in scientific notation, which is easy to get around.

I finally read the internet and figured out how to use Excel to serve this purpose, and it was beautiful.  I will provide a link to an example I did in 1st block in another post.

The command is NORMINV(RAND( ), mean, standard deviation).  It works beautifully and saves lots of time.

Math Team Schedule

MATH TEAM:

Friday, 10/18: Math Madness Week # 1 Match during Titan Time, Math Lab

Tuesday, 10/22: Georgia Math League Contest # 1, 7:30 AM, Room 2209

Tuesday, 10/29: Math Team Meetings, 7:30/3:35, Room 2209

Also, look for us on Club Day!

Really funny jokes

The answers to the riddles from Friday are referenced below by Page Number:

26  Siene
27  Mugging
30  A Dead End
31  Aftermath
33  To Get A Boo-ster Shot

Angle Sum & Difference

I put two problems on the board for students to practice in Accelerated III Tuesday.  I can't remember what questions I asked, so here's a whole bunch of answers.

For the problem on top:
sin(a+b) = -63/65
sin(a-b) = 33/65
cos(a+b) = -16/65
cos(a-b) = 56/65
sin(2a) = -24/25
sin(2b) = -120/169
cos(2a) = 7/25
cos(2b) = -119/169

For the problem on bottom, in the same order:
(3+4 root 3)/10
(3-4 root 3)/10
(3 root 3 - 4)/10
(3 root 3 + 4)/10
(root 3)/2
24/25
1/2
-7/25

I may have made a mistake somewhere (I'm sitting in an impressive Robotics Club meeting).