A lathe is set to cut steel bars and considered to be in perfect adjustment if the average length of the bars it cuts is 7 cm. A sample of 31 bars is selected randomly and the length are measured. It is determined that the average length of the bars in the sample is 7. 055 cm with a standard deviation of 0. 35 cm. Find a 97% confidence interval that the average length of the bars is in perfect adjustment.

Identifying what you will need to review takes place

Approximately workers each year are treated for injuries caused by lifts, jacks, or jack stands. a) 2,000 b) 5,000 c) 10,000 d) 15,000

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.