Question

A researcher is interested in whether using your finger to follow the words you are reading increases reading speed. He has students complete a reading speed test, first without using their finger to follow the words, and then again white using their finger to follow the words. In the beginning of the study, a randomly selected group of 64 students scored an average of 256 words per minute on the reading speed test. Since the sample size is larger than 30, the researcher can assume that the sampling distribution of M0 is normal. He plant to use a repeated-measure t-test. The researcher Identifies, the null and alternative hypothesis as: Use the Distributions tool to find the critical region(s) for alpha = 0.5. The critical t-score, which is the value for t-scores that separates the tail(s) from the train body of the distribution and form the critical region(s), is ___. In the trial where they used their fingers while they read, the students scored an average of 9 words per minute higher than before they began using their fingers while they read. The standard deviation of the difference scores was s = 29. To calculate the t statistic, you must first calculate the estimated standard error. The estimated standard error is ___. Calculate the t-statistic. The t-statistic is ____.

Answer 1