Required information The growth of populations of organisms has many engineering and scientific applications. One of the simplest models assumes that the rate of change of the population p is proportional to the existing population at any time t. dtdp=kgp where kg = the growth rate. Given, the step size = 5 years. The world population, in millions, from 1950 to 2000 is given below: Issuming the given equation holds, use the data from 1950 through 1970 to estimate kg. (Round the final answer to four decimal laces.) The estimate of the population growth rate is kg=/yr