You Want to Estimateσ for the Population of Waiting Times $\sigma$

question 40

Essay

You want to estimateσ for the population of waiting times at McDonald's drive-up windows, and you want to
be 95% confident that the sample standard deviation is with 20% of $\sigma$ Find the minimum sample size. Is this
sample size practical?

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Definitions:

Social Ties

The connections between individuals in a society, including friendships, familial relationships, work associations, and other forms of social interactions.

Histrionic Personality Disorder

A mental disorder characterized by a long-term pattern of excessive emotionality and attention seeking.

Cognitive-Behavioral

An intervention technique designed to tackle unhealthy emotional responses, behaviors, and thought patterns through a goal-focused, orderly sequence.

Histrionic Personality Disorder

A mental disorder characterized by a pattern of excessive attention-seeking behaviors, emotional overreaction, and suggestibility.