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.
It has a wide range of known locations throughout Africa. The black mamba is native to Somalia, Ethiopia, Kenya, Botswana, Uganda, Zambia, Zimbabwe, Angola, Namibia, Malawi, Mozambique, South Africa and the Congo.They inhabit a wide variety of areas that include open savannahs, open woodlands, and rocky outcrops.he Black Mamba is also the fastest land snake in the world, able to reach speeds in excess of 12 miles per hour (20kph). However it uses this speed to escape danger, rather than catch prey. The name black mamba is somewhat confusing because it contradicts the snake's actual color.