Calculation of population standard deviation
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With p= 80, x= 86and corresponds to z= + 2.00, what is the population standard deviation?
If you have a score of x= 65 on an exam, which set of parameters would give you the best grade on the exam?
- u= 60 and o= 5
- u=70 and o= 10
- u= 60 and o= 10
- u= 70 and o= 5
If you have a population of u= 50 what value would make x= 55 a central representative score in the population?
cannot be determined
o= 10
o=1
o= 5
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Solution Summary
The solution gives detailed steps on computing a standard deviation and z scores using standard normal distribution.
Solution Preview
1. yes, standard deviation=(86-80)/2=3
2. We need to calculate the z score for ...
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