The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution. test h0 : p=0.28 vs ha : p< 0.28 when the sample has n=800, and p^=0.217 with se=0.01. find the value of the standardized z-test statistic. round your answer to two decimal places.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.