Ozone is a major component of air pollution in many cities. Atmospheric ozone levels are influenced by
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Ozone is a major component of air pollution in many cities. Atmospheric ozone levels are influenced by many factors, including weather. In one study, the mean percent relative humidity (x) and the ozone levels (y) were measured for 120 days in a western city. Ozone levels were measured in parts per billion. The following MINITAB output describes the fit of a linear model to these data. Assume that the assumptions of the linear model are satisfied.
a. What are the slope and intercept of the least-squares regression line?
b. Can you conclude that relative humidity is useful in predicting ozone levels? Answer this question using the α = 0.05 level of significance.
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