A large corporation employs thousands of people worldwide. The average age of the employees is known to be 45.6 years with a standard deviation of 6.2 years. A simple random sample of 100 of the employees is selected from which the average age is calculated to be 47.2 with a standard deviation of 5.46 years. Which of the following is the value of a parameter? 6.2 47.2 100 None of the above

The only parameter in the options is 6.2 since represent the population deviation. 47.2 is an statistic since represent the info from the sample and n =100 is the sample size.

Step-by-step explanation:

For this case we define the random variable X as the age of the employees and for this case we know the following info:

The last two value are parameters since represent the info from the population.

We know that they select a sampel of n =100 and they got the following info:

And these values represent statistics since are calculated from a sample size (a portion of the population size).

The only parameter in the options is 6.2 since represent the population deviation. 47.2 is an statistic since represent the info from the sample and n =100 is the sample size.