Find the t value(s) for each of the following cases. Round your answers to 3 decimal places. Enter negative values as negative number. O. a. Upper tail area of 0.025 with 15 degrees of freedom is 2.131 b. Lower tail area of 0.005 with 55 degrees of freedom is 2.668 c. Upper tail area of 0.20 with 35 degrees of freedom is 0.852 d. Where 90% of the area falls between these two t values with 20 degrees of freedom. e. Where 99% of the area falls between these two t values with 40 degrees of freedom.

Convert each decimal to a percent: (a) 0.41 (b) 2.25 (c) 0.0925.

John left his house in Irvine at 8:35 a.m. to drive to a meeting in Los Angeles, 45 miles away. He arrived at the meeting at 9:50 a.m.. At 6:30 p.m. he left the meeting and drove home. He arrived home at 7:18 p.m. (a) What was his average speed on the drive from Irvine to Los Angeles? (b) What was his average speed on the drive from Los Angeles to Irvine? (c) What was the total time he spent driving to and from this meeting?