A Small Grocery Store Is Considering Installing an Express Checkout

question 106

Short Answer

A small grocery store is considering installing an express checkout line. Let X be the number of customers in the regular checkout line. Note that these numbers include the customers being served, if any. The probability distribution of X is given in the table below.
-Find the probability that at least two people are in line.

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Definitions:

Hippocampal Damage

Harm or injury to the hippocampus, an area of the brain involved in forming new memories and spatial navigation.

Procedural Memory

A type of long-term memory for performing specific tasks, not requiring conscious thought for actions or skills learned through repetition.

Explicit Memory

A type of long-term memory involving the conscious recollection of factual information, previous experiences, and concepts.

Korsakoff's Syndrome

A chronic memory disorder often caused by severe deficiency of thiamine (vitamin B1), usually due to long-term alcohol abuse.