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Twenty (20) students randomly assigned to an experimental group are studying for a test while listening to classical music. Thirty (30) students randomly assigned to a control group are studying for the same test in complete
asked by Jennifer on July 31, 2011 
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18. Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on
asked by Doris I on February 20, 2010 
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Twenty students randomly assigned to an experimental group receive an instructional program: 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the
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Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the
asked by Anonymous on September 23, 2010 
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Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the
asked by summer on September 19, 2011 
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Use the following information and data for questions 15. A group of researchers hypothesizes that listening to music while studying for an exam influences test scores. They randomly selected 28 subjects and randomly assigned them
asked by TLC on October 20, 2010 
Statistic
Twenty students assigned to an experimental group receive 30 in a control group has a mean of 38 on the test (with an estimated population standard deviation of 3); the control group has a mean of 35 (with an estimated population
asked by Anonymous on October 10, 2009 
Statistic
Twenty students assigned to an experimental group receive 30 in a control group has a mean of 38 on the test (with an estimated population standard deviation of 3); the control group has a mean of 35 (with an estimated population
asked by Anonymous on October 11, 2009 
Probablity
Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5
asked by Mathslover on May 14, 2013 
Math, HELP ME!
What is the experimental probability of the spinner landing on red? a. 1/2 b. 1/3 c. 1/4 *** What is the experimental probability of the spinner landing on blue? a. 2/7 b. 1/4 *** c. 2/9 There’s a spinner with 8 sections in
asked by Ginger on February 11, 2016