In an effort to cut costs and improve profits, many U. S. companies have been turning to outsourcing. In fact, according to Purchasingmagazine, 54% of companies surveyed outsourced some part of their manufacturing process in the past two to three years. Suppose 560 of these companies are contacted. Appendix A Statistical Tables

a. What is the probability that 337 or more companies outsourced some part of their manufacturing process in the past two to three years?
b. What is the probability that 287 or more companies outsourced some part of their manufacturing process in the past two to three years?
c. What is the probability that 52% or less of these companies outsourced some part of their manufacturing process in the past two to three years?

(Round the values of z to 2 decimal places, e. g. 15.25. Round the intermediate values to 4 decimal places, e. g. 0.2513. Round your answers to 4 decimal places, e. g. 0.2513.)

a=

b=

c=