You are testing a claim that p>0.75 at a significance level of a 0.02. The calculator returns a P.Value of 0.1789. What decision do you make? A Fail to Reject the Claim OB Reject Ho OC Reject the Claim OD. Fail to Reject He 2. Above are two pictures of my wire wheel/buffing wheel on my workbench. Consider the rear shaft which is 10 inches long. At the left end of the second picture is a 2.75" pulley being driven by a 1/3 HP electric motor at 1725 rpm. The pulley on the motor is also 2.75" so the rear shaft is also rotating at 1725 rpm. The power is transmitted to the wire wheel/buffing wheel via a 4.25" pulley mounted 6.75" from the left. The two bearings are nominally at 2.5" and 8.5" from the left. (40 Points). a. If the driving belt is vertical to the work bench and the driven belt to the wheels is 35 from the table, what are the X (along the table) and Y (vertical) forces on the shaft at the two pulleys and two bearings? b. Compute the minimum shaft diameter assuming a 1020 CD steel shaft and a maximum K of 2.5 for the woodruff keys holding the pulleys. The bearings are pressed fit and the value of K =1. The shaft will be one diameter for its entire length. 3. From Problem 2, use the bearing charts below and the diameter you calculated in Problem 2 to select a bearing. Cost is important so select a bearing with the smallest bore diameter that fulfils the requirements from Problem 2 and provides at least 20 years of use at 2 hours/week. Use the larger radial load as you will be using one bearing size for both bearings (30 Points): a. Calculate the actual life expectancy of your selected bearing (maximum load). b. Is the shaft diameter determined by the forces on the shaft or the inner bearing diameter? c. Extra Credit: If the wheel were improperly mounted and put a 5 lb axial thrust on the shaft, would the bearing still be acceptable?