If the goal is to have 10 randomly-chosen participants in a four treatment design, how many total research participants would be needed using an independent groups design, repeated measures design, and a mixed factorial with combined assignment design (mixed combo), respectively (in order)

If you could answer these your a life saver

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the

Determine if this is a solution to the system