The table utilizes the symmetry of the normal distribution, so what in fact is given is ( P0 le x le a ) where a is the value of interest. This can be used to compute the cumulative distribution function values for the standard normal distribution. The mean for the standard normal distribution is zero, and the standard deviation is one. The table below contains the area under the standard normal curve from 0 to z. For example, if the mean of a normal distribution is five and the standard deviation is two, the value 11 is three standard deviations above (or to the right of) the mean. A z-score is measured in units of the standard deviation. Probability z TABLE A Standard normal probabilities (continued) z.00. The standard normal distribution is a normal distribution of standardized values called z-scores. Tables T-3 Table entry for z is the area under the standard normal curve to the left of z. Solution: Figure 5.10 Computing Probabilities Using the Cumulative Table shows how this probability is read directly from the table without any computation. Look at the standard normal distribution. Recognize the standard normal probability distribution and apply it appropriately It is not a required reading, but it might help you to acquire necessary skills when solving probability questions.
0 kommentar(er)
