A swim coach wants to test whether practicing with swim paddles improves swimmers' breaststroke times in the 100- meter relay race. He asks the first member of the relay team to continue swimming without paddles. He asks the other

three members of the relay team to swim with paddles for two weeks. He records the swim times of the relay teams with

and without paddles. Which group of an experiment are the other three members of the relay team part of?

-single-blind

-confounding

-control

-experimental

experimental

Step-by-step explanation:

In a research design such as the one described in the scenario above, participants are separated into two distinct groups. The hypothesis (if swimming with paddles is faster than without paddles) being tested is applied on one of the two groups while the other group remains as before. Hence, the group which receives the treatment which is to be tested (those who swim with paddles) are called the experimental group. The other group of participants who continue to swim without paddles are the control group.

Hence, the other group of three member who were asked to swim with paddles for two weeks are the experimental group because they are the ones who received the actual treatment in the experiment.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

215.92 dollars is the answer