Carry out the model utility test using a significance level

Assignment Help Basic Statistics

Reference no: EM131087585

The article cited in Exercise 49 of Chapter 7 gave summary information on a regression in which the dependent variable was power output (W) in a simulated 200-m race and the predictors were x₁ = arm girth (cm), x₂ = excess post-exercise oxygen consumption (ml/kg), and x₃ = immediate posttest lactate (mmol/L). The estimated regression equation was reported as

a. Carry out the model utility test using a significance level of .01. [Note: All three predictors were judged to be important.]

b. Interpret the estimate 14.06.

c. Predict power output when arm girth is 36 cm, excess oxygen consumption is 120 ml/kg, and lactate is 10.0.

d. Calculate a point estimate for true average power output when values of the predictors are as given in (c).

e. Obtain a point estimate for the true average change in power output associated with a 1 mmol/L increase in lactate while arm girth and oxygen consumption remain fixed.

Reference no: EM131087585

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