Jenny is ordering 600 mm length aluminum sheets for her company. she finds two different suppliers and orders a box of 40 sheets from each company. she then measures each sheet and creates the dotplot to compare the companies. which statement correctly compares the distributions? a) supplier a consistently has the correct length for the aluminum sheets. b) on average, supplier b's sheet could be at least 3 mm smaller than the advertised length. c) on average, the length of supplier b's sheets is 2 mm greater than that of supplier a's sheet. d) even though there is more variability in supplier b's length, on average they have the correct length.

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.