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Course: AP??/College Statistics?>?Unit 11
Lesson 4: Confidence intervals for the difference of two means- Conditions for inference for difference of means
- Conditions for inference on two means
- Constructing t interval for difference of means
- Calculating confidence interval for difference of means
- Two-sample t interval for the difference of means (calculator-active)
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Two-sample t interval for the difference of means (calculator-active)
Problem
Fast food companies want their products to be as similar as possible across locations. Miguel is tasked with making sure that two locations of a fast food chain have burger patties of the same size. He takes a random sample of patties from each location. Here are summary statistics for his samples:
Location A | Location B | |
---|---|---|
Sample mean | ||
Sample standard deviation | ||
Sample size |
Assume that the conditions for inference have been met.
Which of the following is a confidence interval for the difference in mean weight (in grams) of the patties from the two restaurants ?
Use a calculator with statistical capabilities to calculate the interval.
Use a calculator with statistical capabilities to calculate the interval.