Final answer:
The average temperature for the 20 days recorded at the ski resort is 13.3° when rounded to the nearest tenth.
Step-by-step explanation:
To find the average temperature for the 20 days recorded at the ski resort, we need to sum all the temperatures and divide by the number of days. The sum of the given temperatures is:
22 + (-8) + 12 + 19 + 25 + 8 + 25 + 9 + 22 + 8 + 25 + 27 + 8 + 21 + 2 + 13 + 26 + 9 + (-4) + 3 = 265 degrees.
Now, we divide this sum by the number of days, which is 20, to get the average:
265 ÷ 20 = 13.25 degrees.
Rounding to the nearest tenth, the average temperature is 13.3°.