The Number of Hours of Sleep Per Night Averaged by a Group

question 4

Short Answer

The number of hours of sleep per night averaged by a group of students is approximately normally distributed with mean and standard deviation . What is the probability that a student selected at random had more than 7.5 hours of sleep? Round to 2 decimal places.

---

Definitions:

Study Participation

Involves individuals willingly taking part in research to contribute to knowledge, which can range from filling out questionnaires to being part of experimental treatments.

Negative Reinforcement

A behavioral principle where the removal of an unpleasant stimulus strengthens a behavior or increases the likelihood of its repetition.

Unpleasant Stimulus

A negative or harmful stimulus that causes discomfort or aversion, often used in psychology to study learning, memory, and behavior conditioning.

Desired Behavior

A specific pattern of action that an individual or group aims to achieve or exhibit.