A mass weighing 4 pounds stretches a spring 4 inches.

(a) Formulate an initial-value problem that corresponds to the motion of this undamped
mass-spring system if the mass is extended 1 foot from its rest position
and released (with no initial velocity).

(b) Using the result of Exercise 20, find the solution of this initial-value problem

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.