IKEA is a well respected furniture company that has a very specific style. You are hired as a quality control officer for their shelving units to test if you can bolster the weight they hold. You are working on the standard KALLAX shelving unit that holds around 20 lbs per shelf. You adjust the reinforcers for the shelves and then test the first 15 units. On average, they held 26 lbs with a standard deviation of 2.2 lbs. Construct a hypothesis test with alpha of .05 to test if the new bolstered shelving units have a higher weight capacity.

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