# Which of the following is not a characteristic of the t test? Choose the correct answer... Which of the following is not a characteristic of the t test? Choose the correct answer below. O A. The Student t distribution is different for different sample sizes. O B. The t test is robust against a departure from normality. O C. The Student t distribution has the same general bell shape as the standard normal distribution. O D. The Student t distribution has a mean of t 0 and a standard deviation of s -1.

The mean of t distribution is 0 and variance of t distribution is depends upon the sample size. Variance of t distribution is not equal to 1.

Hence, correct option is D.

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