Example 9: The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. If we stipulate that a baby is. premature if the length of pregnancy is in the lowest 4%, find the length that. separates premature babies form those who are not premature.) Table A-2 is designed only for the standard normal distribution, which has a mean of 0 and a standard deviation of 1. II) Each value in the body of the table is the cumulative area from the left op to a vertical line above a specific value of z.
The black mamba (Dendroaspis polylepis) is a venomous snake endemic to sub-Saharan Africa. It takes its common name not from the colour of its scales, but from the interior of its mouth, which is inky-black.
The western green mamba (Dendroaspis viridis), also known as the West African green mamba or Hallowell's green mamba, is a long, thin, and highly venomous snake of the mamba genus, Dendroaspis. This species was first described in 1844 by the American herpetologist Edward Hallowell.he western green mamba is a very alert, nervous, and extremely agile snake that lives mainly in the coastal tropical rainforest, thicket, and woodland regions of western Africa. Like all the other mambas, the western green mamba is a highly venomous elapid species.