Write down the R solutions of the following questions. Use the following data to construct a confidence interval for the true mean difference between scores of two independant groups. Use a 95% level of confidence. Group1: 65, 58, 78, 60, 68, 69, 66, 70, 53, 71, 63, 63 Group 2: 62, 53, 36, 34, 56, 50, 42, 57, 46, 68, 48, 42, 52, 53, 43

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