Data management:

find n if

c ( n+ 2 , 2 ) = 36

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?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

What is the frequency of the sinusoidal graph?