
Understanding T-Distribution and Confidence Intervals

Interactive Video
•
Mathematics, Science
•
10th - 12th Grade
•
Hard

Jackson Turner
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main objective of the video tutorial?
To calculate a 95% confidence interval for the mean emission
To perform hypothesis testing on engine data
To compare different engine designs
To determine if the engines meet emissions requirements
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a T-distribution used instead of a normal distribution?
Because the data is skewed
Because the sample size is large
Because the sample size is small
Because the data is normally distributed
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the T-value 2.262 in this context?
It is the sample mean
It is the standard deviation of the sample
It is the critical value for a 95% confidence interval
It is the mean of the T-distribution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the T-statistic calculated in this video?
By multiplying the sample mean by the sample size
By adding the sample mean and standard deviation
By dividing the sample mean by the sample size
By subtracting the true mean from the sample mean and dividing by the standard deviation over the square root of the sample size
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sample mean used in the calculation?
2.98
15.04
17.17
19.3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sample standard deviation used in the calculation?
17.17
2.98
19.3
15.04
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of multiplying the inequality by 0.942?
To simplify the inequality
To convert the inequality into an equation
To eliminate the T-statistic
To adjust the inequality for a different confidence level
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