A soap manufacturer tested a standard bar of soap to see how long it would best. A test subject showered with the soup each day for 15 days and recorded the Weight (in grams) of the soap after the shower. The moulting regression output looks like this Dependent variable Is: Weight R-squared - 99.5% s . 2.949 Variable Coefficient SE(Coeff) t-Ratio P-Value Intercept 123.141 1.382 89.1