Asked by Allison Bartley on Jul 13, 2024
Verified
The average number of average number of hours per day a university student spends on homework is 5 hours with a standard deviation of 1.25 hours.How many standard deviations from the mean is 2 hours spent on homework?
A) 2.40 standard deviations below the mean
B) 1.20 standard deviations below the mean
C) 2.50 standard deviations above the mean
D) 1.20 standard deviations above the mean
E) 2.40 standard deviations above the mean
Hours Per Day
A measurement unit indicating the amount of time allocated or spent on activities within a 24-hour period.
Homework
Assignments given to students by their educators to be done outside of classroom sessions.
- Attain knowledge of the concept and formula for standard deviations from the average.
Verified Answer
TS
Toaha SiddiqueJul 19, 2024
Final Answer :
A
Explanation :
To find how many standard deviations from the mean 2 hours is, use the formula: (X - μ) / σ, where X is 2 hours, μ (mean) is 5 hours, and σ (standard deviation) is 1.25 hours. This calculation gives (2 - 5) / 1.25 = -3 / 1.25 = -2.4, indicating 2.40 standard deviations below the mean.
Learning Objectives
- Attain knowledge of the concept and formula for standard deviations from the average.