18) college graduates about 34% of workers in the united states are college graduates. you randomly
select 50 workers and ask them if they are a college graduate. (source: u. s. bureau of labor statistics)
(a) find the probability that exactly 12 workers are college graduates.
(b) find the probability that more than 23 workers are college graduates.
(c) find the probability that at most 18 workers are college graduates.
(d) a committee is looking for 30 working college graduates to volunteer at a career fair. the committee
randomly selects 125 workers. what is the probability that there will not be enough college graduates?

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.