(a) Suppose that the average person in the population falls asleep in 15 minutes (without
listening to classical music) with o = 6
minutes. State the null and alternative
hypotheses for this study.

Why are graphs useful when interpreting data

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m

An object is kept at 45 m high and how much time will it take to reach the ground