When Observing a Checkout Line at a Food Store, the Average

question 32

Essay

When observing a checkout line at a food store, the average number of people served is 30 per hour. Using the Poisson distribution, what is the standard deviation of the number of people served in an hour?

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Definitions:

Monozygotic Twins

Identical twins that result from the fertilization of a single egg that then splits into two, sharing 100% of their genetic material.

Dizygotic Twins

Also known as fraternal twins, these are siblings born at the same time but developed from two separate eggs fertilized by two different sperm.

Coefficient Alpha

A statistical measure, also known as Cronbach's alpha, used to assess the reliability or internal consistency of a set of scale or test items.

Split-half Reliability

A measure of the consistency of results across halves of a test, indicating how well two halves of a test measure the same attribute or quality.