17. The following sample data reflect shipments received by a large firm from three different vendors.

Vendor Defective Acceptable 1 14 112 2 10 70 3 22 150

a. Specify the competing hypotheses to determine whether quality is associated with the source o f the shipments.

b. Conduct the test at a 1% significance level using the critical value approach.

c. Should the firm be concerned about the source o f the shipments? Explain.