1.39 what is the difference between a nominal skilled variable and an ordinal scaled variable?

1.48 The Gallup organization releases the results of recent polls on its website, www.gallup.com. Visit this site and read an article of interest.

a. Describe the population of interest.

b. Describe the sample that was collected.

c. Describe a parameter of interest.

d. Describe the statistic used to estimate the parameter in (c)

1.52 Three professors examined awareness of four widely disseminated retirement rules among employees at the University of Utah. These rules provide simple answers to questions about retirement planning (R. N. Mayer, C. D. Zick, and M. Glaittle, "Public Awareness of Retirement Planning Rules of Thumb," Journal of Personal Finance, 2011 10(62), 12-35). At the time of the investigation, there were approximately 10,000 benefited employees, and 3,095 participated in the study. Demographic data collected on these 3,095 employees included gender, age (years),

education level (years completed), marital status, household income ($), and employment category.

a. Describe the population of interest.

b. Describe the sample that was collected.

c. Indicate whether each of the demographic variables mentioned is categorical or numerical.