Section 7.1-7.2 Review Exercise and memorization Students wanted to see If exercising (in particular doing jumping jacks) would help people memorize a list of 10 words that were read to them. They wanted to compare this with the same test of memorizing words while the subjects were sitting down. The data can be found on Google CR titled "ExerciseMemorization" a) Assume the students are conducting a study using paired design with repeated measures. Use an appropriate applet and complete the table below. Exercising Not Exercising Difference Mean Standard Deviation b) What is the observed statistic? c) Assuming a true null hypothesis, we simulated this study and found 1,000 mean differences that are shown in the null distribution below, Based on where the observed statistic lies in this distribution, does the p-value appear to be fairly small? Shade this region. 02 0.8 12 d) The standard deviation of the null distribution is 0.337. Use this to find the standardized statistic for this test. (t - Arrone-9) e) Based on your standardized statistic from part (e), is there strong evidence that people can memorize words better when exercising compared to when just sitting? Explain. f) Suppose you are testing the hypotheses Ho:Me-me = 0 and Ha: He-me # 0 in a paired-design and obtain a p-value of 0.78. Which one of the following could be a possible 95% confidence interval for He-me? L -2.30 to - 0.70 150 to 3.80 -1.20 to 0.90 N. 4.50 co 6.90