A population has the following characteristics. (a) A total of 75% of the population survives the first year. Of that 75%, 25% survives the second year. The maximum life span is 3 years. (b) The average number of offspring for each member of the population is 2 the first year, 4 the second year, and 2 the third year. The population now consists of 144 members in each of the three age classes. How many members will there be in each age class in 1 year?
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
![A population has the following characteristics.
(a) A total of 75% of the population survives the first year. Of that 75%,
25% survives the second year. The maximum life span is 3 years.
(b) The average number of offspring for each member of the population
is 2 the first year, 4 the second year, and 2 the third year.
The population now consists of 144 members in each of the three age classes.
How many members will there be in each age class in 1 year?
O s age s 1
1 s age s 2
2 s age s 3
In 2 years?
O s age s 1
1 s age s 2
2 s age s 3
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