Corey has 4929 songs in his computer's music library. the lengths of the songs have a mean of 242.4 seconds and standard deviation of 114.51 seconds with the accompanying normal probability plot of song lengths. complete parts
a. and
b. below. click the icon to view the normal probability plot of song lengths. a) is this distribution normal? explain.
a. yes, because there is a curved pattern to the plot.
b. no, because there is no pattern to the plot.
c. no, because the plot is not roughly a diagonal straight line.
d. yes, because the plot is roughly a diagonal straight line. b) if it isn't normal, how does it differ from a normal model?
a. the distribution is skewed to the left.
b. the distribution is skewed to the right.
c. the distribution is uniform.
d. the plot is normal.