PLEASE HELP THIS IS URGENT Why was it harder for pre-blockbuster-era moviegoers to see movies as soon as they were released?

The studio system meant only certain films showed at certain theaters.

Antitrust laws disrupted movie exhibition.

Only so many prints could be made, each sent to one theater at a time.

Strict laws about propaganda required extra time to examine films.

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?

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Can someone me out here number 4 plz