### Assuming normal populations with equal standard deviations

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An educator is considering two different videotapes foruse in a half-day session designed to introduce students to thebasics of economics. Students have been randomly assigned to twogroups,and they all take the same written examination after viewingthe videotape.The scores are summarized here. Assuming normal populations with equal standard deviations, does it appear that thetwo videotapes could be equally effective ? What is the most accurate statement that could be made about the p-value for the test?

Videotape1:x1=77.1                 s1=7.8           n1 = 25

Videotape 2: X2 =80.0         s2 = 8.1        n2 = 25

a line is above the x

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