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This test can be saved and Force Completion ater Question Completion Status A Moving to another question will save this response. ??Question 10 of 21 Question 10 0.5 points Save Answer test for a population mean. Under the conditions described Suppose that you wish to conduct a hypothesis below, should you use the Z-test procedure, the t-test procedure, or neither? The population standard deviation is known. The population may not be normally distributed. The sample size is large. O t-test statistic @ Z-test statistic ?

Explanation / Answer

Z -test and T-test requires normality of data. If data is not normal we can not use normal distirbutions like T-distirbution and Z distirbution procedures.

If the data failes Normality test: We have to determine the reason:

Outliers, underlying distirbution is not normal, Skewness, low discrimination used and large sample size.

Answer: Neither.

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