To conduct a test of hypothesis with a single sample mean,we must assume
A)the sampling distribution is normal.
B)random sampling.
C)interval-ratio level of measurement.
D)all of the above

Question

Quizplus · Accepted Answer

All of the above assumptions must be made in order to conduct a test of hypothesis with a single sample mean. The sampling distribution must be normal in order to use methods such as the t-test. Random sampling is necessary to ensure that the sample is representative of the population. Interval-ratio level of measurement is required to ensure that the data is continuous and can be used in calculations for the test. Therefore, all of the above assumptions must be met in order to conduct a valid test of hypothesis with a single sample mean.

To Conduct a Test of Hypothesis with a Single Sample