Question 57
MediumOriginal questionScores are normal with mean 500 and standard deviation 50. What percentage score between 450 and 600? (Take and .)
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
450 gives and 600 gives .
, that is 81.85%.
Worth noting
13.59% subtracts the areas; the interval straddles the mean, so they add.
- Concept
- The share between two values
- Typical timeTypical
- 90 s
- Your timeYours
- —
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