3. Find the z value that corresponds to the given area.
a.
0.3875
b.
0.0187
c.
0.9811
4. Population in U.S. Jails. The average daily jail population in the Mexico is 1,100,125. If the
distribution is normal and the standard deviation is 122,190, find the probability that on a
randomly selected day, the jail population is
a. Greater than 875,000
b. Between 500,000 and 1,000,000
5. Newborn Rhinoceros Weights. Newborn rhinoceros's calves usually weigh between 300
and 350 pounds. A rhinoceros at a local Zoo gave birth to a female calf weighing in at a
whopping 477 pounds! It is believed to be the heaviest rhinoceros calf ever born at a facility
accredited by the Association of Zoos and Aquariums. If, indeed, the mean weight for
newborn rhinoceros's calves is 321 pounds with a standard deviation of 51 pounds, what is
the probability of a newborn weighing at least 477 pounds? Assume that the weights of
newborn rhinoceros are normally distributed.
