The adjustable tool rest on a bench grinder should be positioned _____
a. 1?8 inch from the grinding wheel
b. 1?4 inch from the upper wheel guard
c. 1?2 inch from the lower guard
d. 3?4 inch from the wheel arbor
a
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Answer the following statement true (T) or false (F)
A county engineer would like to determine if a speed reduction strategy has been effective, and performs a second speed study to pair with one done before the strategy was implemented. The collected data has the following characteristics. Determine, with a 95% confidence level, if there is a statistically significant decrease in speeds, using first the t-test and then the Z-test.
?1 = 43.8 mi/h ? 2 = 35.2 mi/h S1 = 6.5 mi/h S2 = 7.6 mi/h n1 = 30 n2 = 30 What will be an ideal response?
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Answer the following statement true (T) or false (F)