To determine how the randomizations is done in the experiment.
The randomization is done by assigning the volunteers to two different groups at random.
The volunteers are numbered from 1 to 40 and using graphing calculator command, 20 random numbers are generated to select volunteers for one of the groups. Remaining are placed in the another group.
Given information:
An organization offers course to improve the SAT scores of students.
The claim is that there is an increase by average of 50 points when the test for SAT exam is retook.
To verify, 40 volunteers who had taken SAT once are selected.
Explanation:
An Experiment is a study of cause-and-effect between the variables.
40 volunteers should be considered in two groups.
Randomization:
Students are assigned to different groups randomly.
Randomization is done in following steps:
Step 1: The volunteers are numbered form 1 to 40.
Step 2: Using the graphing calculator command
Step 3: 20 distinct numbers are generated and are considered in group 1
Step 4: Remaining 20 are placed in group 2
Chapter 10 Solutions
PRECALCULUS:GRAPHICAL,...-NASTA ED.
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