Why a Parameter? Given the results described in Exercise 1, is the mean of 140.0 executives expressed with μ or Explain why the mean of 140.0 executives is a parameter instead of a statistic.

Exercise 1

Variance An Office Team survey of 150 executives found that 93.3% of them said that they would be concerned about gaps in a résumé of a job applicant. Based on these results, such randomly selected groups of 150 executives have a mean of 140.0 executives and a standard deviation of 3.1 executives. Find the variance, and express it with the appropriate units.

Answer :

Step 1 :

Given, An Office Team survey of 150 executives found that 93.3% of them said that they would be concerned about gaps in a résumé of a job applicant. Based on these results, such randomly selected groups of 150 executives have a mean of 140.0 executives and a standard deviation of 3.1 executives

Here,...