Algebra-1

Question Analysis
This question involves finding the total frequency of intervals that fit a specific range ("between 14 and 35 minutes, not including 14 and 35") in a histogram.
The main focus is on identifying intervals that lie entirely within the range and summing their frequencies.

Key Concept Explanation
Frequencies of Intervals in a Restricted Range: For conditions like "between 14 and 35 (excluding endpoints)," we include intervals where the lower bound > 14 and upper bound < 35. This ensures we count only data points within the strict range.

Step-by-Step Solution
Identify intervals that meet "between 14 and 35 minutes (excluding 14 and 35)":
The 15–24 interval: Lower bound (15) > 14, upper bound (24) < 35 → qualifies.
The 25–34 interval: Lower bound (25) > 14, upper bound (34) < 35 → q...