The article "Acceptable Noise Levels for Construction Site Offices" (Building Serv. Engr. Res. Tech., 2009: 87-94) analyzed responses from a sample of 77 individuals, each of whom was asked to say whether a particular noise level (dBA) to which he/she had been exposed was acceptable or unacceptable. Here is data provided by the article's authors:

Interpret the accompanying Minitab logistic regression output, and sketch a graph of the estimated probability of a noise level being acceptable as a function of the level.

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Acceptable: 55.3 55.3 55.3 55.9 55.9 55.9 55.9 56.1 56.1 56.1 56.1 56.1 56.1 56.8 56.8 57.0 57.0 57.0 57.8 57.8 57.8 57.9 7.9 57.9 58.8 58.8 58.8 59.8 59.8 59.8 62.2 62.2 65.3 65.3 65.3 65.3 68.7 69.0 73.0 73.0 3 Unacceptable: 63.8 63.8 63.8 63.9 63.9 63.9 64.764.7 64.7 65.1 65.1 65.1 67.4 67.4 67.4 67.4 68.7 68.7 68.7 70.4 70.4 71.2 71.2 73.1 73.1 74.6 74.6 74.6 74.6 79.3 79.3 79.3 79.3 79.3 83.0 83.0 83.0 95% CI Lower predictor Constant noise level0.359441 Coef 23.2124 SB Coef 5.05095 0.0785031 odds Ratio Upper 4.60 -4.58 0.000 0.000 0.70 0.60 0.81