A basketball player grabbing a rebound jumps 78 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 14 cm of this jump and (b) in the bottom 14 cm?.

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error