Indicate whether each statement regarding the use of the Student's t distribution is true or false: True False a) The t procedure is robust, so that as long as the population does not depart too much from normal your results will be reasonable b) The t distribution procedures are insensitive to changes in the sample size c) When using a sample size of more than 15 but less than 40, the t distribution procedures should not be used for data that is highly skewed and/or contain extreme outliers d) If the sample size is less than 15, you should use the t distribution only if sure that the data is close to normal