Question

a buddy team in NAUI master scuba diver course makes an ocean dive to 95 feet for 20 minutes, after a one hour and twenty minute surface interval they can make a dive up to 65 feet for _______ minutes or less

Answer 1

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.

Answer 2

To determine the length of time a diver can stay at 65 feet after an initial dive to 95 feet for 20 minutes, followed by a 1 hour 20 minute surface interval, one would need to consult NAUI dive tables or a dive computer. This calculation helps to prevent decompression sickness by managing nitrogen absorption.

Step-by-step explanation:

The question involves a scuba diver who wants to know after a dive to 95 feet for 20 minutes and a surface interval of 1 hour and 20 minutes, how long they can safely dive at a depth of 65 feet. To solve this, one would normally refer to dive tables or a dive computer that gives the no-decompression limits based on depth and previous dives. Unfortunately, without the specific dive table or dive computer algorithm, it is impossible to give the exact answer. In the real world of scuba diving, the diver would consult NAUI (National Association of Underwater Instructors) tables or their dive computer to find the remaining no-decompression time at 65 feet. This calculation is crucial because it helps divers avoid decompression sickness (DCS) by managing their nitrogen absorption and release.

Divers have to be aware of buoyancy, pressure equalization, and the amount of time they spend underwater. The compressibility of gases is particularly relevant when scuba diving, as the air in the diving tanks is highly compressed to allow for sufficient breathable air at depth.