Cautions About Significance Worksheet with Answer Key

What's on the worksheet

1. A made-up city transportation office tries 12 new crosswalk paint patterns.
2. For two groups of n each, with a true difference d between the two proportions and both proportions near p, the test statistic of the two-sample z…
3. A made-up moving company tries four new ways of planning its jobs, Methods A to D, to cut the share of moves that finish later than promised.
4. A made-up crop lab tests each of 60 wheat genes, one at a time, for a link with grain hardness, each test at = 0.05.
5. A made-up chocolate factory tried a new cooling method on randomly chosen batches.
6. A made-up national tax agency has redesigned a paper tax form.