Final answer:
Tim's daily mean average is 421 miles.
Step-by-step explanation:
To find Tim's daily mean average, we need to divide the total distance traveled by the number of days. Tim drove a total of 450 miles, 380 miles, and 433 miles in a 3-day trip. So, the total distance traveled is 450 + 380 + 433 = 1263 miles. To find the daily mean average, we divide the total distance by 3 (number of days): 1263 / 3 = 421 miles.