After a certain medicine is ingested, its concentration in the bloodstream changes over time. The relationship between the elapsed time, t, in minutes, since the medicine was ingested, and its
concentration in the bloodstream, C(t), in mg/L, is modeled by the following function:
C(t) = 78 · (0.62)
Complete the following sentence about the percent change in the concentration of the medicine.
Every minute,
% of concentration is
added to v
the total concentration of the
medicine in the bloodstream.

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.