A large corporation employs 27,320 individuals. The average income several years ago for all employees was 73,440 with a standard deviation of 19,575. You are interested in comparing the incomes of today's employees with those of several years ago. A random sample of 100 employees of the corporation yields x over bar=75,010 and s=18,858.

Complete parts a through d below.

a. Describe the center and variability of the population distribution. What shape does it probably have? Explain.

The center of the population distribution is ( )(Type an integer or a decimal. Do not include the $ symbol in your answer.)

The variability of the population distribution is ( )

(Type an integer or a decimal. Do not include the $ symbol in your answer.)

What shape does the population distribution probably have?

A. It is probably approximately normal because the population size is very large. Populations that are sufficiently large are always approximately normal.

B It is probably skewed right because the company probably has many lower-level employees with lower incomes and a fewupper-level employees with very high incomes.

C. It is probably uniform because the company probably has many set levels of employee ability where incomes are fixed for a given ability level

D. It is probably skewed left because the company probably has many upper-level employees with very high incomes and a fewlower-level employees with lower incomes

b. Describe the center and variability of the data distribution. What shape does it probably have? Explain.

The center of the data distribution is ( )

(Type an integer or a decimal. Do not include the $ symbol in your answer.)

The variability of the data distribution is ( )

(Type an integer or a decimal. Do not include the $ symbol in your answer.)

What shape does the data distribution probably have?