THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

question 240

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
A small grocery store has two checkout lines available to its customers: a regular checkout line and an express checkout line.Customers with 5 or fewer items are expected to use the express line.Let X and Y be the number of customers in the regular checkout line and the express checkout line,respectively.Note that these numbers include the customers being served,if any.The joint probability distribution is given in the table below.

-Find the marginal distribution of X.What does this distribution tell you?

---

Definitions:

Inhibitory Interneuron

A type of neuron that reduces or inhibits the activity of other neurons, playing a key role in neural circuits.

Stretch Reflex

A muscle contraction in response to stretching within the muscle, part of the body's reflexive action to maintain posture and balance.

Antagonistic Muscles

Muscle pairs that work opposite each other; when one muscle contracts, the other relaxes, allowing movement in opposite directions.

CNS

The central nervous system, comprising the brain and the spinal cord.