Find the 80th percentile for a standard normal distribution.
Answers
Answer:
Step-by-step explanation:
The standard normal distribution can also be useful for computing percentilestext annotation indicator. For example, the median is the 50th percentile, the first quartile is the 25th percentile, and the third quartile is the 75th percentile. In some instances it may be of interest to compute other percentiles, for example the 5th or 95th. The formula below is used to compute percentiles of a normal distribution.
equation image indicator
where μ is the mean and σ is the standard deviation of the variable X, and Z is the value from the standard normal distribution for the desired percentile.
Example:
The mean BMI for men aged 60 is 29 with a standard deviation of 6.
The mean BMI for women aged 60 the mean is 28 with a standard deviation of 7