A variable of two populations has a mean of 9.4 and a standard deviation of 2.9 for one of the populations and a mean of 9.2 and a standard deviation of 4.5 for the other population. For independent samples of sizes 4 and 6, respectively, find the mean of x1 - x2. A) 0.02 B)-176.00 C) 6.5 D) 0.2

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Solve this problem! extra ! 3025/5.5 = a/90.75