Final answer:
A reasonable logging interval for measuring and recording temperatures could be every 1 minute, as it aligns with the frequency of measurements in the provided examples involving ice melting and water heating.
Step-by-step explanation:
The logging interval that can be programmed by the user to measure and record temperatures depends on the specific requirements of the experiment or application. However, referring to the given information and the standard practices in data collection for temperature changes, a reasonable logging interval could be every 1 minute. This recommendation is based on the example procedures provided, where temperature measurements are taken every minute during the heating or cooling of substances such as ice melting or water heating until it boils.
When plotting a graph of time versus temperature for the heating of ice, frequent data points will ensure a detailed and accurate representation of the temperature changes over time. Similarly, for preventive maintenance on air conditioners, knowing the average service time and standard deviation can help plan the appropriate interval for service records and assessments.