
Understanding Confidence Intervals

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

Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary focus of this video on confidence intervals?
Learning about probability distributions
Exploring hypothesis testing
Understanding assumptions for confidence intervals
Calculating sample means
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to have a random sample when calculating confidence intervals?
To avoid bias and ensure validity
To make calculations easier
To ensure the sample size is large
To reduce the margin of error
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the rule of thumb for the normal condition in confidence intervals?
At least 5 successes and failures
At least 10 successes and failures
At least 15 successes and failures
At least 20 successes and failures
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the independence condition, or 10% rule, state?
Sample size should be exactly 10% of the population
Sample size should be less than 10% of the population
Sample size should be 10 times the population
Sample size should be more than 10% of the population
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if the independence condition is violated?
The confidence interval becomes wider
The confidence interval may not be valid
The sample size increases
The margin of error decreases
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a non-random sample affect confidence intervals?
It increases the confidence level
It skews the results and reduces validity
It has no effect on the results
It makes the interval narrower
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expected hit rate for a 95% confidence interval?
97%
95%
93%
90%
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