QUESTION 3 This problem is based on formulas

Researchers in the field of occupational safety have developed a test to measure the reaction time (time between motor response to a stimulus) to a visual stimulus. The purpose of the study was to examine the extent to which the presence of noise of various intensities can have an effect on reaction time. Thirty subjects participated in this study. Each participant was randomly assigned to each noise level. These levels are 50 decibels, 55, 60, 65, 70, and 75, so there are five participants per noise level. Preliminary calculations indicate that: