
Understanding Confidence Intervals and Hypothesis Testing

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 was the primary goal of the experiment involving two groups of obese people?
To test if a low-fat diet helps obese people lose weight.
To evaluate the impact of calorie counting on weight loss.
To compare the effects of a low-fat diet and a high-protein diet.
To determine the best exercise routine for weight loss.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the mean weight loss for the low-fat diet group after four months?
10.50 pounds
5.67 pounds
9.31 pounds
7.40 pounds
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is a 95% confidence interval important in this study?
It shows the exact weight loss for each individual.
It helps determine if the weight loss is statistically significant.
It predicts future weight loss trends.
It calculates the average calorie intake.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a Z-table help you find in the context of confidence intervals?
The mean weight loss of the sample.
The critical Z value for a given confidence level.
The exact weight of each participant.
The total number of participants in the study.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the critical Z value for a 95% confidence interval?
1.96
2.58
1.64
2.33
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the standard deviation of the difference in sample means calculated?
By adding the variances of the two samples.
By subtracting the variances of the two samples.
By multiplying the variances of the two samples.
By dividing the variances of the two samples.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the calculated confidence interval for the difference in weight loss between the two groups?
0.5 to 2.5 pounds
0.7 to 3.12 pounds
1.0 to 2.0 pounds
0.7 to 2.12 pounds
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