Q1) It is of interest to employers to know how many dependents their employees have as this has n effect on how much they might expect to pay out in health care and other benefits. Certain company uses many young people with few dependents. Distribution of number of dependents is given below. No employee has more than 5 dependents.
|
Number of dependents
|
Percentage
|
|
0
|
45%
|
|
1
|
27%
|
|
2
|
13%
|
|
3
|
7%
|
|
4
|
4%
|
|
5
|
|
1) What percentage of employees has 5 dependents?
ii) Of all employees which have at least one dependent, what percentage has more than one?
iii) Determine the most common number of dependents which employees have?
iv) If the employee is selected at random, determine the probability that person has at least three dependents?
v) Compute the median number of dependents?
vi) What is the mean number of dependents?
vii) What is the standard deviation of the number of dependents?