Experiment 2

Question 6

A researcher wants to determine the effects of sleep deprivation (no sleep for 12 hours vs. no sleep deprivation/sleeping at least 7 hours) and caffeine intake (2 cups decaffeinated coffee vs. 2 cups regular caffeinated coffee) on mental alertness scores, rated on a 0 -100 scale, with higher scores=more alertness. One group of participants complete the study over four consecutive nights, with night 1 being sleep deprivation + no caffeine, night 2 being no sleep deprivation + no caffeine, night 3 being sleep deprivation + caffeine, and night 4 being no sleep deprivation + caffeine. Each morning participants complete the mental alertness rating.

What type of analysis should be done?

Group of answer choices

Pearson product-moment correlation

Independent-samplest-test

Paired-samplest-test

One-way between-subjects ANOVA

One-way repeated-measures ANOVA

Two-way between-subjects ANOVA

Two-way repeated-measures ANOVA

Two-way mixed ANOVA

Chi-square goodness-of-fit

Chi-square test of independence

Question 7

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 SleepANOVA Summmary x Sources SS df MS F p value sleep 855. 63 1 855.63 760.56 <. error caffeine sleep x . subject total descriptives group mean sd sem n no for hr-no hr-caffeine>