Checkpoint: The Empirical Rule (for Normal Distributions) Solutions - Demme Learning

Checkpoint: The Empirical Rule (for Normal Distributions) Solutions

The technology supervisor at Fair View High School determined that teachers receive $μ = 11, σ = 2$ emails each day.

Sketch and label the normal distribution for emails received.

How likely is it that less than or equal to 13 emails are received daily?

$50 % + 34 % = 84 %$

What interval represents 95% of the population?

$[7, 15]$

Note

Q: What is the likelihood that a teacher receives more than 11 emails per day?

A: $50 %$