answer this questuon in picture Hannah wants to see it her new technique of ping

Question

answer this questuon in picture

Hannah wants to see it her new technique of ping-pong playing can increase one's ping-pong performance. She asks the U.S. Olympic ping-pong team to work with her. Half of the U.S Olympic team is randomly assigned to be taught by the new style the experimental group, and the other randomly assigned half are not, the control group. Her technique does not significantly increase the performance of the experimental group compared to the control group, perhaps because they are already so good at the sport. This could be an example of:

Explanation / Answer

Sol:

We divided into 2 groups

experimental group and control group.

Experimental group is measured after beig exposed to treatment.

control group is measured without having been exposed to treatment

its an example of Randomized pretest-posttest control group design.

See the below image for reference

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