Identify the type of sampling used: random, systematic, convenience, stratified, or cluster. to estimate the percentage of defects in a recent manufacturing batch, a quality control manager at microsoftmicrosoft selects every 1010th software cdsoftware cd that comes off the assembly line starting with the sixthsixth until she obtains a sample of 7070 software cdssoftware cds.

Using least squares fitting, you are to fit the data sets to the following models and solve for the parameters ai , where i is the index of the parameter. the input/output data for the systems are linked in the bblearn site. for each of the systems use matlab to plot the supplied data vs. the model fit on one plot. include your code in the solutions. (a) linear fit "lineardata.mat" y=a1x^3 + a2x^2 + a3x + a4 (b) plant fit "plantdata.mat g(s) = a1/(s + a2)

Why were most movies from the late 1890s until the early 1930s only filmed in black and white? there were only a few people who could afford the technology to produce color motion pictures back then. audiences did not want color motion pictures until later. the film used to make color motion pictures often overheated, which was a safety hazard, so it was generally not allowed. color films had to be hand-colored, frame by frame.

How can the temperature of a room be raised by 5degreesf?