Mike Wanted to Examine Whether People Remembered Information Better with Auditory

Essay

Mike wanted to examine whether people remembered information better with auditory cues or with visual cues. He recruited 14 participants and randomly assigned seven participants to each of the two groups: one group heard a list of words from headphones, and the other group saw the same list of words from the screen. The participants were then asked to write down as many words as they could remember. The dependent variable was the number of words correctly remembered (Y), and the covariate was the participants' score on a memory test (X) administered before the experiment. Using the data below, conduct an ANOVA on Y, an ANCOVA on Y using X as a covariate, and compare the results ( $\alpha$ = .05). Determine the unadjusted and adjusted means.
$\begin{array}{l}\text { Auditory cue (headphone) }\\\begin{array}{|c|c|}\hline X \quad\quad\quad\quad& Y \quad\quad\quad\quad\\\hline 80 & 10 \\\hline 75 & 9 \\\hline 95 & 16 \\\hline 60 & 4 \\\hline 70 & 11 \\\hline 65 & 8 \\\hline 90 & 15 \\\hline\end{array}\end{array}$$\begin{array}{l}\text { Visual cue (screen) }\\\begin{array}{|c|c|}\hline X\quad\quad\quad\quad & Y\quad\quad\quad\quad \\\hline 75 & 13 \\\hline 90 & 20 \\\hline 65 & 8 \\\hline 70 & 9 \\\hline 80 & 15 \\\hline 85 & 13 \\\hline 75 & 12 \\\hline\end{array}\end{array}$