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A study was conducted to compare two new reading methods, DRTA and Strat, with the traditionalmethod, Basal.
A study was conducted to compare two new reading methods, DRTA and Strat, with the traditionalmethod, Basal.1 The 66 students were divided randomly into three groups, one taught by each of the threemethods. Two pre-tests, Pre1 and Pre2, and three post-tests, Post1, Post2, Post3, were given to eachstudent. The results are in the file ReadingMethods.xlsx.Notice that the original data is on the page ReadingData; the pages Pre and Post have the data sorted bytest into the three treatment groups.
1. At the start of the experiment, were the three groups, B, D, S comparable? Use ANOVA todecide. Write out your reasoning clearly, showing the Excel printout and including• the hypotheses,• the value of the test statistic,• the -value,• your conclusion and its interpretation.
2. Is there evidence that the new reading methods, DRTA and Strat, work better than Basal? UseANOVA to decide. Write out your reasoning clearly, showing the Excel printout and including• the hypotheses,• the value of the test statistic,• the -value,• your conclusion and its interpretation in terms of reading methods.
