Elementary Statistics 4th Edition

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Is the following variable at the interval or the ratio level of measurement? The price of a loaf of bread A) Interval B) Ratio 2) In an experiment, subjects are put into two categories according to sex, and then each subject is randomly assigned a treatment . This is an example of... A) observational studies B) gender bias C) confounding D) randomized blocking 3) Determine which of the following describes qualitative data. i). the volume of a shipping container, in gallons ii). the name of the material from which the container is made iii). the shape of the container A) i, ii, and iii B) i and iii only C) ii and iii only D) i and ii only 4) A college basketball team held a promotion at one of its games in which every twentieth person who entered the arena won a free basketball. What kind of sample do the winners represent? A) Systematic B) Voluntary response C) Stratified 1) 2) 3) 4) 5) Which one of the following data are discrete? 5) A) the average preseason ranking of the University of Connecticut's women's basketball team over the past 10 years B) the height of the tallest player on Duke University's men's basketball team C) the pre-season ranking of Duke University's men's basketball team D) the average height of players on the University of Connecticut's women's basketball team 6) In a experiment, subjects do not decide for themselves which treatment they will get. A) double-blind B) observational C) randomized D) prospective 7) You ask your friends who they plan to vote for in the next congressional election. Based on their responses, you conclude that the candidate you favor cannot lose! This is most likely an example of ... A) voluntary response bias B) self-interest bias C) sampling bias D) randomized sampling 6) 7) 3 8) A study in which the assignment to treatment groups is not made by the investigator is called _______ _. A) double-blind B) prospective C) randomized D) observational 9) Determine which of the following describes qualitative data. i). the make of the car with license plate number VNS-862 ii). the license plate number VNS-862 iii). the number of vehicles whose license plate number begins with "VNS" A) i and ii only B) iii only C) neither i, nor ii, nor iii D) i only 8) 9) 10) Which one of the following data are discrete? 10) A) the number of crew members on the boat B) the latitude and longitude of a boat at sea C) the speed of the boat's propeller, in revolutions per minute D) the latitude and longitude of the boat's port of departure 11) Determine which of the following describes ordinal data. i. In the horse race, Betty's Girl won, Mr. Ed placed, and Wabash showed. ii. In the horse race, I bet on Betty's Girl to win, Mr. Ed to place, and Wabash to show. A) ii only B) neither i nor ii C) both i and ii D) i only 12) Determine which of the following describes quantitative data. i). the name of a chemical sample ii). the mass of a chemical sample iii). the color of a chemical sample A) i and ii only B) i, ii, and iii C) i only D) ii only 13) A medical researcher wants to determine whether exercising can lower blood pressure. At a health fair, he measures the blood pressure of 100 individuals and interviews them about their exercise habits. He divides the individuals into two categories: those whose typical level of exercise is low, and those whose level of exercise is high. Is this a randomized experiment or an observational study? A) Randomized experiment B) Observational study 14) Is the following variable at the interval or the ratio level of measurement? The weight in pounds of a sack of potatoes A) Interval B) Ratio 15) Is the following variable at the interval or the ratio level of measurement? The year of your birth A) Interval B) Ratio Answer Key Testname: C1 1) B 2) D 3) C 4) A 5) C 6) C 7) C 8) D 9) A 10) A 11) C 12) D 13) B 14) B 15) A