Using the information in the table that follows to determine if the differences between the means are significant.

Medical Terminology Class

Group A = Number of word elements remembered by studentsusingflash cards

Group B = Number of word elements remembered by studentsnotusing flash cards

Group x Standard Deviation (sd) n

A 75 2.0 10

B 50 3.5 10

The null hypothesis: There is no difference between the groups.

Ho:u1-u2=0

(t=19.61, df =18, p<0.01