Find (a) the point estimate of the population parameter u, and the (b) standard deviation for each of the following sets of data. 1. Scores in a long test in Statistics and Probability SAMPLE 1 SAMPLE 1 SAMPLE SAMPLE 4 SAMPLE 6 SAMPLET SAMPLE N 78 75 86 82 70 85 83 86 80 92 82 85 80 88 84 86 90 88 90 78 83 90 86 84 75 85 77 88 85 90 85 83 83 86 83 84 86 92 85 80 76 88 79 84 80 88 80 88