In the Month Preceding This Day, the Author's Mother Made

question 20

Essay

In the month preceding this day, the author's mother made 18 phone calls in 30 days. No calls were made on 17 days, 1 call was made on 8 days, and 2 calls were made on 5 days.
Use the Poisson distribution to find the probability of no calls in a day. Based on this probability, how many of the 30 days are expected to have no calls?

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Definitions:

Crystal Ball

In decision-making and forecasting, a metaphorical term used to describe the ability to predict future events or outcomes.

Crystal Ball

A metaphorical term referring to the attempt to predict future events or outcomes, often used in the context of business forecasting or decision making.

Crystal Ball

A forecasting and risk analysis software used in financial, operational, and project applications.

Program Evaluation and Review Technique

The Program Evaluation and Review Technique (PERT) is a project management tool used to estimate the duration of a project by analyzing the time required for various tasks.