Students in the 8th and 11th grades were surveyed about whether they participate in a school sport. The survey results are shown in the two-way frequency table.

Does the data show an association between grade level and participation in a school sport?

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?

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Tim tradesman pays $2,000 annually for $125,000 worth of life insurance. what is the cash value of the policy after 10 years? 11,125 13,125 17,800 111,250