Could someone help me with these word problems? I posted it before but someone answered with random letters to take the points and this assignment is due tomorrow so could someone genuinely help me please?

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)

What are “like terms”? why can we only add like terms?