Final Answer:
The number of scores between 29.9 and 59.9 are (c) 31.
Step-by-step explanation:
To determine the number of scores between 29.9 and 59.9, we need to consider the range inclusively. The interval between 29.9 and 59.9 includes all values from 29.9 to 59.9, including both endpoints. The number of scores within this range is determined by subtracting the lower endpoint from the higher endpoint and adding 1. Therefore, the correct calculation is
. Hence, the correct answer is option (c) 31.
Understanding the inclusive nature of the range is crucial in such problems. Including both endpoints is necessary because we are dealing with a continuous scale of values, and specifying "between" implies considering the entire interval. The calculation reflects the total count of scores within the given numerical range.
In summary, when determining the number of scores within a specified range, it is important to consider the inclusivity of the interval. In this case, the correct answer is 31, as the range from 29.9 to 59.9 includes both 29.9 and 59.9. This type of reasoning is fundamental in accurately interpreting and solving problems related to numerical intervals.