Yes, they are independent. First of all, we know that P(A) = 1/4, P(B) = 2/5, and P(A and B) = 1/10. To know if two events are independent, the following questions must be true: P(A)*P(B) = P(A and B). So since (1/4)*(2/5) = 2/20 which equals 1/10, these events are independent
Through the muscle contractions, or A
Let x be the current price of the product
1.15 * x = $2..88
So when rearranging the equation, you get:
x = 2.88/1.15 = $2.50 (to the nearest cent)
