In a sample of 90 large grade A eggs, the mean number of calories was 70 with a standard deviation of 2.5. In a sample of 85 large grade AA eggs, the mean number of calories was 80 with a standard deviation of 2.7. Find a 98% confidence interval for the mean difference in the number of calories between grade AA and grade A eggs.

What will be an ideal response?


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If the G-code is G21 G90 F6 G01 Z1.00:

A. The spindle will move at a rate of 6 inches per minute to a point where z = 1.00 in. B. The spindle will move at a rate of 6 inches per minute for a distance of 1.00 in. C. The spindle will move at a rate of 6 millimeters per minute to a point where z = 1.00 mm D. The spindle will move at a rate of 6 millimeters per minute for a distance of 1.00 mm

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Multi-view drawings are often called ____-view drawings.

A. two B. three C. four D. five

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Which pipe is most commonly used in radiant heating systems?

A. PEX B. PVC C. CPVC D. ABS

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To identify and assess hazards, it is essential that employers _____

a. ensure that crew leaders are present at the job site b. conduct inspection of contractor offices c. design safety logs d. conduct accident investigations

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