11. Statistical inference

a. refers to the process of drawing inferences about the sample based on the characteristics of the population. b. is the same as descriptive statistics. c. is the process of drawing inferences about the population based on the information taken from the sample. d. is the same as a census

12. The collection of all elements of interest in a particular study is.

a. the population b. the sampling c. statistical inference d. descriptive statistics

13. A portion of the population selected to represent the population is called.

a. statistical inference b. descriptive statistics c. a census d. a sample

14. Statistical studies in which researchers control variables of interest are.

a. experimental studies b. control observational studies c. nonexperimental studies d. observational studies

15. A scale that only possesses the characteristic of description and order is the:

a. Ordinal scale. b. Lickert Scale. c. Nominal scale. d. Interval scale. e. Ratio scale.

Exercises 1 Find the transition function of the two-state birth and death process by solving the forward equation. N Consider a birth and death process having three states 0, 1, and 2, and birth and death rates such that lo = #2. Use the forward equation to find Poy(t), y = 0, 1, 2.Example I (Rosenberg [91]). Let f and g be PDFs with corresponding DFs F and G. Also, let (10) h(x, y) = f(x):(y)[1 + a(2F(x) - 1)(2G(y) - 1)]. where ja|