Question #62027
The small piston of hydraulic lift has an area of 0.20 m2. A car weighing 1.20 x le N sits on a rack mounted on the large piston. The large piston has an area of 0.90 m2. How large a force must be applied to the small piston to support the car??
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In Hypothesis testing: It is claimed that the average weight of a bag of biscuits is 250 grams with a standard deviation 20.5 grams. Would you agree to this claim if random sample of 50 bags of biscuits showed a average weight of 240 grams, using a 0.05 level of significance?