Determine the mean, variance, and standard deviation of each. 1. A random sample of size 30 taken from a population of 1,000 with u = 20 and q = 9. 2. A random sample of size 45 taken from a population of 900, with u = 18.25 and q = 81. 3. When sample of size 9 are taken with replacement from the population 7, 6, 6, 6, 4, 4, 3, 1, 1, and 1. 4 A community has Lenn