To determine whether noise affects the ability to solve math problems, a researcher has one group solve math problems in a quiet room and another group solve math problems in a noisy room. The group solving problems in the noisy room completes 25 problems in one hour and the group solving problems in the quiet room completes 34 problems in one hour. In this experiment, the independent variable is ____________ and the dependent variable is _____________. A. The number of problems solves; the difficulty of the problems. B. The number of problems solved; the noise level in the room. C. The noise level in the room; the number of problems solved. D. The noise level in the room; the difficulty of the problems.

Professor Romano looks at ways to improve student learning. She gives half of her students practice quizzes with only multiple choice questions. She gives the other half of her students practice quizzes that also include short answer questions. Then she looks at how students perform on the exam. Which of the following would be a NOISE variable?Group of answer choicesIf a student already makes their own short answer questions to practice their understandingThe students in the short answer group have a higher average already (before the exam) than the students in the multiple choice groupAll of the students are in the same class sectionWhat type of quiz questions the students saw

In a basic true experiment with only two conditions, you are interested in the effects of noise on completing a comprehension task. You decide to play a tape recording of very loud music to which group of participants? A. Those participants in the control condition. B. Those participants in the experimental condition. C. Those participants in another random group. D. None of these. It is a trick question

Rebecca is conducting a study in which one group is exposed to loud music while completing a writing assignment and the other group has quiet conditions. Further, Rebecca examines the effect of gender within these groups. Therefore, she is examining the effects of both noise and gender on participants' performance on a writing task. Which of the following reflects the type of variables in this study? A. One independent variable and two dependent variables B. One control variable and two independent variables. C. Two independent variables and one dependent variable. D. One independent variable, one control variable, and one dependent variable.

Experimentation helps to determine the nature of the relationship of  independent variable only.Group of answer choicesTrueFalse

Which of the following would be treated like an independent variable in a quasi-experimental study though it is not a true independent variable?1 分Number of others present (one, three, or five confederates)Drinking status (abstainer, social drinker, regular drinker, heavy drinker)Amount of time to study a list of words (one, five, or 15 minutes)Loudness of background noise (soft, moderate, loud)