Suppose the mean wait-time for a telephone reservation agent at a large airline is 40 seconds. A manager with the airline is concerned that business may be lost due to customers having to wait too long for an agent. To address this concern, the manager develops new airline reservation policies that are intended to reduce the amount of time an agent needs to spend with each customer. A random sample of 250 customers results in a sample mean wait-time of 39.3 seconds with a standard deviation of 4.2 seconds. Using a=0.05 level of significance, do you believe the new policies were effective in reducing wait time? Do you think the results have any practical significance? State the conclusion for the test. A. Reject Ho because the P-value is less than the a=0.05 level of significance. B. Do not reject Ho because the P-value is greater than the a=0.05 level of significance. C. Reject Ho because the P-value is greater than the a=0.05 level of significance. D. Do not reject Ho because the P-value is less than the a=0.05 level of significance.