t 4.docx (17.9 KB) ZOOM 1 ) A researcher did an experiment in which, she presented 50 words to one group of subjects at the rate of 2- secs per word; 4-secs per word to another group; for a third group the rate of 6-secs per word, and 10-sec per word to the last group. The researcher was interested in studying whether the rate of presentation significantly influenced the recall of these words. The researcher recorded the following mean number of words recalled: 2 sec intervals: 14, 11, 13, 12, 12, 10, 8, 9, 11, 10, 13, 11, 28, 22, 15, 21, 22, 14, 21, 14, 24, 12, 21, 22, 24, 23, 23, 34, 22, 4 sec intervals: 22, 14, 15, 16, 16, 17, 16, 12, 22, 20, 21, 13, 23, 33, 43, 12, 22, 24, 33, 22, 21, 34, 44, 21, 43, 22, 21, 19, 13 6 sec intervals: 22, 21, 21, 10, 11, 13, 11, 14, 12, 13, 10, 10, 45, 33, 44, 45, 43, 42, 23, 45, 21, 34, 22, 34, 41, 23, 22, 32, 34 10 sec intervals: 50, 45, 49, 44, 45, 43, 34, 44, 44, 45, 33, 43, 43, 32, 21, 24, 25, 34, 32, 43, 34, 31, 22, 32, 32, 44, 50, 45, 47 Determine from these data whether there was a statistically significant effect of presentation rates on recall of the words presented, and if so, what was the effect