Final answer:
This Mathematics question pertains to regression analysis used in scuba diving for calculating safe dive times. It requires knowledge of decompression models but cannot be answered without the specific regression equation or dive table data for the second dive.
Step-by-step explanation:
This question falls within the domain of Mathematics, specifically related to regression analysis which is used in determining safe dive times based on various depths. The student's question pertains to calculating the allowable dive time for a second dive after an initial dive to 95 feet for 20 minutes, followed by a surface interval of one hour and twenty minutes, and planning a subsequent dive to a depth of 65 feet.
This involves an understanding of decompression models used in scuba diving to calculate nitrogen off-gassing during surface intervals. To solve this problem, typically divers would use a dive table or dive computer that applies these models. However, as the question seems to imply using a regression line to make a prediction, it suggests we need to use the calculated least squares regression line from provided dive data (which isn't comprehensively provided here) to estimate the maximum allowable time for the second dive. Without the specific regression equation or dive table data, we are unable to give a numerical answer to the question.
The situation described in the question requires understanding decompression rules to prevent decompression sickness, and how dive tables or dive computers can help in planning repetitive dives.