Which of the following are common traits shared by both the t-distribution and z

Question

Which of the following are common traits shared by both the t-distribution and z-distribution?

You must make a selection for each option. Click once to place a check mark for correct answers and click twice to empty the box for the wrong answers.

Both distributions always have a mean of zero.unanswered

Both distributions are symmetric and mound-shaped.unanswered

Both distributions always have a standard deviation of one.unanswered

Both distributions represent continuous random variables.unanswered

Both distributions are right skewed.

Explanation / Answer

Answer:

Both distributions always have a mean of zero.

Both distributions are symmetric and mound-shaped.

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