Press the Draw New Samples button to generate data for two samples. You want to test the following hypotheses:
H_{0}: μ_{1} - μ_{2} = 0
H_{a}: μ_{1} - μ_{2} ≠ 0
After viewing the data, enter a guess for the p-value (two-sample t-test) and press Check Guess.
Edit population parameters
Population information
n_{1} =
n_{2} =
Simulated Samples
Dotplots
Boxplots
p-value guess:
Standardized statistic:
t-value =
, df =
p-value =
Sample sizes range from 5 to 15; Means range from 20 to 30; Difference in means ranges from 0 to 10; (common) Standard deviation ranges from 3 to 12.
Check the change parameter Edit population parameters box to change these settings/use sliders.
Thanks to Josh Tabor for inspiration on this applet design