A group of 4th graders has a mean weight of 84 lbs, standard deviation of 8 lbs.  If a randomly chosen student weighs 99 lbs, would their weight be considered usual or unusual?  1.  Calculate the z-score 2.  State if the weight would be usual/unusual 3.  Justify your answer.

numbers for the games so far are listed below.

What is the interquartile range of the data?

siblings for each of200 randomly selected students in the school. What is the sample?

the following number of cards drawn from a deck until a queen appears.

How many students watched greater than9.5 and less than11.5hours of TV per weekend, on average?

A 10-N object falling at 20 m/s encounters 10 N of air resistance.  What is its falling speed 2 seconds after that particular moment? (a = Fnet /m,  v = a x t)

53, 47, 43, 36, 31, 42, 44, 45, 46

Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The

results are presented in the following histogram.