Stat 200 Midterm Exam LATEST UPDATE A+

Stat 200 Midterm Exam Professor: Dr. Tiffany DePriter Name______ Instructions: • The midterm exam is worth 100 points. There are 10 problems, each worth 10 points. Content from weeks 1-4 is covered on the midterm. • This exam is open book and open notes, and you may take as long as you like on it provided that you submit the exam no later than the due date posted in our course schedule of the syllabus. You may refer to your textbook, notes, and online classroom . Here are the basic rules of showing work: a) Each step should show the complete expression or equation rather than a piece of it. b) Each new step should follow logically from the previous step, following rules of algebra. c) Each new step should be beneath the previous step. d) The equal sign, =, should only connect equal numbers or expressions. 1.) A doctor wishes to estimate the mean triglyceride level of patients two hours after eating a steak dinner. To estimate the mean, you collect data from 22 patients. State the individual, variable, population, sample, parameter, and statistic. Individual: The triglyceride level of patients two hours after eating a steak dinner. Population: Total number of patients. Sample: The 22 patients. Parameter: Population mean. Statistic: Sample mean. 2.) Explain why the relative frequency column of a frequency table might not sum to 1.0. People like numbers that are easier to read. For example, say we did a calculation that gave us the answer 0.. Most of the time, you would round that up to 0.24 because it is easier to convey to someone reading the report than having a table of numbers each with 6 or more decimal places. When that happens, the sum might not end up being 1.0 and instead be 1.2 or something because of rounding. 3.) The Affordable Care Act created a market place for individuals to purchase health care plans. In 2014, the premiums for a 27 year old for the bronze level health insurance are given in the table below. Create a frequency distribution, relative frequency distribution, and cumulative frequency distribution using 6 classes. (All prices in the table are in dollars $) 201 189 203 193 179 181 178 164 177 190 189 205