Aphysicist examines 28 sedimentary samples for mercury concentration. the mean mercury concentration for the sample data is 0.863 cc/cubic meter with a standard deviation of 0.0036. determine the 98% confidence interval for the population mean mercury concentration. assume the population is approximately normal. step 2 of 2: construct the 98% confidence interval. round your answer to three decimal places.

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