The u. s dairy industry wants to estimate the mean yearly milk consumption. A sample of 22 people reveals the mean yearly consumption to be 76 gallons with a standard deviation of 18 gallons. Assume the population distribution is normal

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise