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songoku
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Let say math score for students in a class is normally distributed. The teacher wants to check whether the average score of the students is below 6. Five students chosen at random and their math scores noted.
For case above, is z - test or t - test more appropriate? The population is normally distributed, then the sample also nornally distributed so z - test is used? Or because the variance of population is unknown and the sample size is small then t - test is more appropriate?
Thanks
For case above, is z - test or t - test more appropriate? The population is normally distributed, then the sample also nornally distributed so z - test is used? Or because the variance of population is unknown and the sample size is small then t - test is more appropriate?
Thanks