1. You are interested in the effects of caffeine intake and sleep deprivation on mental alertness. Ten participants come to the lab on four separate occasions and do a computerized assessment of mental alertness where a higher score indicated better performance. The participants are tested after each of four conditions (1 condition/visit to the lab) and the order of presentation was counterbalanced across participants. ? 30 min after drinking 2 cups of decaf coffee with no caffeine and after NOT having slept for 12 hours ? 30 min after drinking 2 cups of regular coffee WITH caffeine and after NOT having slept for 12 hours ? 30 min after drinking 2 cups of decaf coffee with no caffeine and after having slept for 7 hours ? 30 min after drinking 2 cups of regular coffee WITH caffeine and after having slept for 7 hours

What type of analysis should be done? Pick one from below

Pearson product-moment correlation

Two-way between-subjects ANOVA

Two-way mixed ANOVA

Chi-square goodness-of-fit

Chi-square test of independence

One-way between-subjects ANOVA

Independent-samplest-test

Paired-samplest-test

Two-way repeated-measures ANOVA

One-way repeated-measures ANOVA

2, Looking at the output below, were any of the results significant?

90 80 70 60 50 Mental Alertness Score(+/-SEM) 40 30 20 10 0 2 cups Decaffinated 2 Cups Regularly Caffeinated Intake Sleep Deprivation Status No Sleep for 12 hours 7 Hours of SleepOutput ANOVA Summmary Sources 55 of MS F p value Caffeine 324.90 1 324.90 79.89 <.001 error sleep_deprivation .001 caffeine x . subject total descriptives group mean sd sem n no-yes no-no yes-yes yes-no>