in the beginning of 1990, the world population was about 5.3 billion, and in the beginning of 2000, the population was approx 6.1 billion. determine the rate of growth from 1990 to 2000

Sorry guys but as you have a small brain

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

X-10/4 when x = –18 a 7 b –2 c –7 d 2