Question: A linear regression model was fit to predict how much money a customer would spend at an online retailer (in $) based on the amount

A linear regression model was fit to predict how much money a customer would spend at an online retailer (in $) based on the amount of time they were browsing the website (ranging between 1 and 100 minutes) along with the quadratic term for time. The coefficients table from a statistical application output is given below: Quadratic term Is there evidence of non-linearity in the relationship between spending and time spent at the website

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