Understanding Normal Distribution and Z-scores
Interactive Video
•
Liam Anderson
•
Mathematics, Science
•
9th - 12th Grade
•
Hard
05:57
10 questions
Show answers
1.
Multiple Choice
What is the mean number of daily lightbulb replacement requests at the university?
33
11
49
16
2.
Multiple Choice
What is the standard deviation of the daily lightbulb replacement requests?
11
33
49
16
3.
Multiple Choice
According to the empirical rule, what percentage of data falls within one standard deviation of the mean?
68%
95%
99.7%
34%
4.
Multiple Choice
How many standard deviations below the mean is the value 16?
4
3
2
1
5.
Multiple Choice
What is the approximate percentage of requests between 16 and 49?
95%
68%
49.85%
34%
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