ASSIGNMENT 1 (BIOSTATISTICS) 1. Two professors examined the knowledge of the retirement rules among employees at the City University. In the investigation, there were 12,000 benefited employees, and 2,863 participated in the study. The variable used to collect the data of these 2,863 employees included, age (years), gender, marital status, household income ($), education level (years completed), and employment category. a. Describe the population of interest. b. Describe the sample that was collected. c. Indicate whether each of the variables mentioned is categorical or numerical. (10 marks) 2. State the difference between inferential and descriptive statistics. Give one example for each inferential and descriptive statistics. (5 marks) 3. What is the purpose of experimental research? Then, give an example for experimental research and non-experimental research. (6 marks) 4. Determine the dependent and independent variable from the following statements. a) The experiment to determine whether how long term smoking affects lung diseases. b) The experiment to compare different types of drugs, to see which has the biggest effect on treating diabetes. (4 marks) 5. A data set contains the following 10 values. 201 210 132 331 k 350 2k 132 220 200 a) Find the value of k if the mean is 217.2 b) Find the mode c) Find the median d) Find the range. e) Find the variance. f) Find the standard deviation. (10 marks)