When finding the sum of 512 and –614, josh used a left-to-right algorithm to compute the answer. he first added the hundred’s digits 500 + (–600) = –100 he then added the ten’s digits 10 + (–10) = 0 lastly, he added the one’s digits 2 + (–4) = –2 his result was –100 + 0 + (–2) = –102 is josh’s answer correct? how else could josh have computed the sum?

The heaviest 16% of all men in weight weigh more than how many pounds ?

Two lines that do not intersect are skew. always sometimes or never

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.