The two dot plots below compare the forearm lengths of two groups of schoolchildren: Based on visual inspection of the dot plots, which group appears to have the longer average forearm length?

1)

Group A, because seven children have a forearm length longer than 10 inches

2)

Group B, because two children have a forearm length longer than 10 inches

3)

Group A, because one child in the group has the least forearm length of 9 inches

4)

Group B, because three children in the group have the least forearm length of 9 inches

Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.

Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)