

Understanding the Student's T-Distribution
Interactive Video
•
Mathematics, Science
•
10th - 12th Grade
•
Practice Problem
•
Hard
Sophia Harris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the Student's T-Distribution used instead of the normal distribution when the population standard deviation is unknown?
It requires less data.
It provides more accurate results for small sample sizes.
It is a more popular method.
It is easier to calculate.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between the Student's T-Distribution and the standard normal distribution?
The T-Distribution is only used for large samples.
The T-Distribution has more probability in its tails.
The T-Distribution has a mean of one.
The T-Distribution is not symmetric.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As the degrees of freedom increase, how does the Student's T-Distribution change?
It becomes less symmetric.
It becomes more like the standard normal distribution.
It becomes more skewed.
It becomes wider.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the degrees of freedom calculated for a sample size of 20?
21
18
19
20
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example provided, what is the sample size used to calculate the confidence interval?
10
12
15
20
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the confidence level used in the example for calculating the confidence interval?
95%
85%
90%
99%
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the approximate sample mean calculated in the example?
8.9833
7.9833
10.9833
9.9833
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