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What's on the worksheet
- For each study, say whether the data are paired or two independent samples, and give the reason from the way the data were collected.
- A made-up kitchen shop claims its onion-dicing gadget is faster than a chef's knife.
- A made-up high school has 150 juniors.
- Twelve volunteers each wear two made-up fitness trackers, model P and model Q, on the same wrist for one whole day.
- A made-up charity tests a folding jig for its mail-outs.
Teach it first
The free lesson teaches it with worked examples and practice problems.
Paired data: interval and test for a mean difference: the lesson ›More Chapter 9 worksheets: Inference for means
- 9.1The t distribution and degrees of freedom
- 9.2Conditions for one mean
- 9.3One sample interval for a mean and sample size
- 9.4One sample test for a mean
- 9.5Interval for a difference of means
- 9.6Test for a difference of means
- 9.7Paired data: interval and test for a mean difference