Question

You are thinking of employing a t procedure to test hypotheses about the mean of a population using a significance level of 0.05. You suspect the distribution of the population is not Normal and may be moderately skewed. Which of the following statements is correct?A) You may use the t procedure, but you should probably claim the significance level is only 0.10.B) You may use the t procedure, provided your sample size is large, say, at least 30.C) You should not use the t procedure because the population does not have a Normal distribution.D) You may not use the t procedure because t procedures are robust to non-Normality for confidence intervals but not for tests of hypotheses.

Answer 1

Answer: B. You may use the t procedure, provided your sample size is large, say, at least 30.

Step-by-step explanation: To use a T test hypothesis, the following steps is considered;

1. Add the test hypothesis when using a T test module in the experiment

2. Add the date set that contains the columns that is to be analyzed

3. Decide which kind of T test is appropriated for the data

4. If single sample is been used, the adequate parameters should be used.

The correct statement in this case is "You may use the t procedure, provided your sample size is large, say, at least 30."