Question

Question 18 (1 point) http://aths.ankabut.ac.ae/d2I/Ims/quizzing/user/attempt/quiz_at..&impcf-&pg-1&qi-309513&ai 2494894&dnb 0&cfql 0&d2l body.type 1 Page 9 of 5/29/19, 5:48 Quiz - ATHS G12 AP Statistics-I Applied Technology High School A psychologist studying the effects of positive thinking" on cognitive ability designs the following study: 120 male volunteers are divided into two groups by random assignment. Eighty female volunteers are randomly divided into two groups of 40 by the same method. One group of 60 males and 40 females is asked to write down three things they feel that they are good at doing. The other group of 60 males and 40 females is asked to write down what they ate for breakfast. All 100 subjects then take a SAT Math practice test, and the means for the two groups are compared. Which of the following is a correct description of this study? An observational study A completely randomized experiment A matched pairs experiment A stratified random experiment A randomized block experiment

Answer 1

Correct option:

A randomized block experiment

Explanation:

Subjects are assigned to blocks based on gender. Then within each block,subjects are randomly assigned to treatments: (i) Write down three things they feel they are good at doing and (ii) write down what they ate for breakfast.

Answer 2

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