2. The summary output of the least squares fit for predicting wife's height from husband's height from a random sample of 170 married couples in Britain, where both partners are below 65 years is provided below. (Intercept) height.husband Estimate 43.5755 0.2863 Std. Error 4.6842 t value 9.30 Pr(>[t|) 0.0000 0.0000 0.0686 4.17 If Tom Cruise and his wife were from the UK, what would this model estimate his wife's height to be? (Tom Cruise is 69 inches) (i) (ii) Tom Cruise' first wife, Nicole Kidman, is 71 inches. Using the regression equation from the question above, calculate the residual between Nicole Kidman's actual height and Nicole Kidman's predicted height.

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Equations and inequalities describe the relationship between two mathematical expressions.

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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.