Aquality analyst wants to construct a control chart for determining whether three machines, all producing the same product, are in control with regard to a particular quality variable. accordingly, he sampled four units of output from each machine, with the following results: machine measurements #1 17 15 15 17 #2 16 25 18 25 #3 23 24 23 22 what are the x-bar chart three-sigma upper and lower control limits? multiple choice 24 and 16 23.16 and 16.84 23.29 and 16.71 23.5 and 16.5 22 and 18

Find the value of x for which abcd must be a parallelogram -9-6x x-30

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Now 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.