You wish to estimate the mean cholesterol levels of patients two days after they had a heart attack. To estimate the mean, you collect days from 28 heart patients. State the individuals, variable, population data, sample dat, parameter and statistic

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?

Ineed with the quizzes in apex mathematics ii

Which of the following is another way to express the difference between -5 and 8?