3 You Run A T Test To Find Out If Exam Scores Are Different Between Students Who Took A Pill Claimed To Make You Smarte 1 (65.08 KiB) Viewed 16 times
3. You run a t-test to find out if exam scores are different between students who took a pill claimed to make you smarter and those who did not. Score SmartPill Equal variances assumed Equal variances not assumed Levene's Test for Equality of Variances F Independent Samples Test .000 Sig. 1.000 t -.507 df 20 -.507 20.000 Sig. (2- tailed) .618 .618 t-test for Equality of Means Mean Difference -2.000 -2.000 Std. Error Difference 3.945 3.945 95% Confidence Interval of the Difference Lower -10.230 -10.230 a. (2pts) Based on the t-test output (mainly the p-value), is there a significant difference in exam scores between the 2 groups (Yes or No)? How can you tell? Upper 6.230 6.230
4. (4pts) What does a p-value tell you about your results? What does it NOT tell you about your results?
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!