Multiple choice: Select the best answer for Exercises 101 to 105. . Each entry in a table of random digits like Table D has probability 0.1 of being a 0, and the digits are independent of one another. If many lines of 40 random digits are selected, the mean and standard deviation of the number of 0s will be approximately (a) mean = 0.1, standard deviation = 0.05. (b) mean = 0.1, standard deviation = 0.1. (c) mean = 4, standard deviation = 0.05. (d) mean = 4, standard deviation = 1.90. (e) mean = 4, standard deviation = 3.60.

Week 2 Being mathematically precise about describing quantitative value distribution Measuring center: MEAN - Mean: the arithmetic average The sample mean, which is a statistic, is denoted by X´ (“ex- bar”): X +X +…+X ∑ X X= 1 2 = i n n where n is the sample size - The population mean, which is a parameter, is denoted by μ (“mu”): x1+x...