Washington High School is building a new running track. The track is constructed from a rectangle and two semicircles. 51 ft 250 ft Part A Determine the distance the runners run around the edge of the track. Round to the nearest whole number. Use 3.14 for T. feet Part B The inside of the track will all be grass. Determine the area of grass needed to fill in the track. Round to the nearest whole number. Use 3.14 for it. square feet

The investigating team suspected that there were differences in the cost of repairing cars in workshop i and workshop ii. the investigating team suspected that the costs raised by workshop i were greater than workshop ii. for that they tested the repair of 15 cars in each workshop to see the cost of repairs. the decision of the right hypothesis to prove the suspicion above is a. h0 : μ1- μ2­ = 0; ha : μ1- μ2­ ≠ 0 b. h0 : μ1- μ2 ≥ 0; ha : μ1- μ2 < 0 c. h0 : μd ≥ 0; ha : μd < 0 with μd = μ2- μ1 d. h0 : μd = 0; ha : μd ≠ 0 with μd = μ2- μ1 e. h0 : μ1- μ2 = 0; ha : μ1- μ2 ≥ 0