Encontrar la media, mediana, moda y rango de los siguiente valores: 84,91, 72,68,87, 78,65,87,79.​

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

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.