4. Identify whether the statement describes inferential statistics or descriptive statistics. a) The chances of winning

[answerhappygod]

4 Identify Whether The Statement Describes Inferential Statistics Or Descriptive Statistics A The Chances Of Winning 1 (156.67 KiB) Viewed 111 times

4. Identify whether the statement describes inferential statistics or descriptive statistics. a) The chances of winning the California Lottery are one chance in twenty-two million. b) The average age of the students in a statistics class is 22 years. 5. Determine whether the study is an observational study or an experiment. a) A medical researcher obtains a sample of adults suffering from diabetes. She randomly assigns 67 people to a treatment group and 67 to a placebo group. The treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same period. At the end of three months, the patients' symptoms are evaluated. b) The personnel director at a large company would like to determine whether the company cafeteria is widely used by employees. She calls employees and asks them whether they usually bring their own lunch, eat at the company cafeteria, or go out for lunch. 6. Identify the sampling technique used. a) A 500 rural and 500 urban people age 65 or older were chosen at random and asked about their health. b) A researcher asks 358 students leaving a university library about their studying habits c) Chosen at random, 580 customers at a car dealership are contacted and asked their opinions of the service they received. d) Every tenth person entering a mall is asked to name his or her favorite store. e) A 48-acre Soybeans field is divided into 48 plots. A sample is taken from each plot to estimate the harvest. f) A student asks 18 friends to participate in a psychology experiment. g) Twenty-five students are randomly selected from each grade level at a high school and surveyed about their study habits. h) A journalist interviews 154 people waiting at an airport baggage claim and asks them how safe they feel during air travel i) At a local community college, five statistics classes are randomly selected out of 20 and all of the students from each class are interviewed.