Price scanners are widely used in U. S supermarkets. While they are fast and easy to use, they also make mistakes. A recent Federal Trade Commission selected a random sample of 800 and 900 merchandise from supermarket scanners and department store scanners, and found that 28 and 82 errored respectively. Obtain a 95% confidence interval for the difference between the error rates of the two scanners and interpret your result in terms of the problem.

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true