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For a particular population, a sample of n=4 scores has a standard deviation error of 6. for the same population a sample of n=16 scores have a standard error of
*3
* 8
*2
*6

A sample of n=16 scores has a standard deviation of 4. what is the standard deviation of the population from which the sample is obtained.
* 64
* 2
* 4
*16

A random sample of n= 4 scores is obtained from a population with a mean of u= 80 and a standard deviation of o= 10. if the sample is M=90 what is the z-score for the sample mean? (please explain how to set up and solve this, I've been trying n-M/u ?)
*z= 1.00
* z= 5.00
* z= 2.00
* z= 20.00

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Solution Summary

A few question related to sample and population mean, SD, SE and z value estimation are solved here.

Solution provided by:
Amrit Lal Ahuja, PhD (IP)
Education
  • BEng, Allahabad University, India
  • MSc , Pune University, India
  • PhD (IP), Pune University, India
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