t Test for TWO INDEPENDENT SAMPLES (Show all work) Does right‐ or left‐handedness affect how fast people type? Random samples of students from a typing class are given a typing speed test (words per minute), and the results are compared. Test the Null Hypothesis with t, using the .01 Level of Significance and construct a 99 percent confidence interval (whether you retain OR reject the Null Hypothesis) Group 1…...Right Handed…….n = 12…..Sample Mean = 55.8…..SS = 358 Group 2…….Left Handed…….n = 12…..Sample Mean = 59.3…..SS = 203

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