Using this link

http://www.stat.berkeley.edu/~stark/Java/Html/BinHist.htm

Scroll down the page until you reach the Binomial Applet. We will use this applet to discover how changing 'n' and 'p' changes the shape of a binomial distribution.

The current applet should show a binomial distribution that is 'normal' in shape. The given value of 'n' is 10 and the given probability of success is 50% (when entering the probability you must enter the decimal value 50% = 0.50).

Practice changing the values for 'n' and 'p' to discover how this changes the shape of the distribution. Enter as many values as you wish just be sure that the "radio button" for f(x) is chosen and NOT the "radio button" for F(x). That is for a different application.

Enter 25 for 'n' and vary the value of 'p'. For 'p' enter values of 0.25 (25%), 0.80 (80%) and then return to 0.50 (50%). Remember to click rescale after each change. Try this with several values for 'p' taking note whether your value is less than or greater than 50%.

*Take note that when you are looking at the curve you will not see the "tail" of the data. If you input n = 50 and p = 0.80 the curve might appear to be normal. However, the curve is skewed to the left. The "tail" of the data is just not seen. Notice that the "bulk" of the curve is to the right. Remember that the x-scale covers values from 0 to 50 so you need to take into consideration the entire domain - not simply what you "see"