Which of the following differences are true between the t-distribution and z-dis
ID: 2909242 • Letter: W
Question
Which of the following differences are true between 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.
The z-distribution always has a standard deviation of one. For the t-distribution, as n approaches infinity, the standard deviation approaches one.unanswered
The z-distribution is mound-shaped, but the t-distribution is right skewed.unanswered
The z-distribution has a constant standard deviation of 1. The t-distribution has a standard deviation that changes with sample size.unanswered
There is only one curve for the z-distribution, but the t-distribution consists of an entire family of curves.unanswered
The z-distribution curve is more peaked, while the t-distribution curve is more spread out (elongated) and flatter on the top at low sample size values.
Explanation / Answer
Answer is The z distribution always has a standard deviation of one , For the t distribution, as n approches infinity , the standard deviation approaches one.
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