Assuming raoult’s law to apply to the system n-pentane (1) and n-heptane (2). what are the values of x1 and y1 at t = 55 c and p = ½ (p1sat +p2sat)? for these conditions plot the fraction of system that is vapor v versus overall composition z1. for t = 55 c and z1 = 0.5, plot p, x1, and y1 versus v

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