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Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

Which statement best explains why ben uses the width hi to create the arc at j from point k