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Which of the following reasons for performing a one-sample t-test?

Which of the following reasons for performing a one-sample t-test?
Math   Statistics-And-Probability   
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Answer #1

One-sample t test is performed when we have only one particular independent sample and we want to test if there is any difference between the sample mean and the hypothesised mean from the population. It is mainly used when we have small size (sample size <=30). If the sample size is large we use the z-test. We make the following assumption during a one- sample t test :

  • Data provided is normally distributed. (It forms a bell-shaped curve)
  • The observations are independent of one another.
  • There is no presence of outliers in the given data.
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