On a Recent English Exam,scores Averaged 77 Points

question 69

Multiple Choice

On a recent English exam,scores averaged 77 points.If 2% of scores fell above 95 points,find an approximate standard deviation (assuming the Normal model is appropriate) .

• A)1.9
• B)83.50
• C)8.78
• D)-8.78
• E)1.54

Identify and explain the impact of extraneous variables on research outcomes.

Define a theory and understand its significance in organizing and explaining observations.

Distinguish between different types of variables (independent, dependent, extraneous) in a study.

Describe the steps of the scientific method and their application in research.

---

Definitions:

Insomnia

Recurring problems in falling or staying asleep.

Delta Waves

Slow brainwaves predominantly associated with deep sleep and restorative processes in the brain.

Night Terrors

A sleep disorder characterized by feelings of terror or dread, usually occurring in the first hours of NREM sleep.

Sleeping Pills

Medications used to facilitate or improve the quality of sleep in individuals with sleep disorders.