Answer :
Final answer:
4) ± 20 degrees F
Oven thermostats should be within ± 20 degrees Fahrenheit of the set temperature according to the Standards of Practice.
Explanation:
According to the Standards of Practice, oven thermostats tested at 350 degrees Fahrenheit should be accurate within a range of ± 25 degrees Fahrenheit. So, when you set an oven to 350°F, the actual temperature inside the oven should generally be between 325°F and 375°F to meet these standards. This information is essential for food safety and ensures that food is cooked properly at the recommended temperatures.