It is 4{:}12\text{ p. m.}Emma's mom will be home from work in 70 minutes, and Emma has gymnastics lessons at 6{:}00 p. m.

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?

Math it's appreciated. (picture provided)

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart