Homework (Copy) Part 1 of 5 points ur Futu O Points: 0 of 5 Save M (Edited 1 A county is considering rasing the speed limit on a road because they claim that the mean speed of vehicles is greater than 40 miles per hour. A random sample of 20 vehicles has a mean speed of 42 miles per hour and a standard deviation of 4.5 miles per hour. At a= 0.10, do you have enough evidence to support the county's claim? Complete parts (a) through (d) below. ca.. (a) Write the claim mathematically and identify Ho and Ha- Choose the correct answer below. t of 3 Mini Di. O A. Ho: H S 40 O B. Ho: H # 40 Ha: HI > 40 Ha: 1 = 40 O C. Ho: H= 40 O D. Ho: H 2 40 Ha: H # 40 Ha: H