An article in The Journal of Clinical Endocrinology and Metabolism [Simultaneous and Continuous 24-Hour Plasma and Cerebrospinal

An article in The Journal of Clinical Endocrinology and Metabolism [€œSimultaneous and Continuous 24-Hour Plasma and Cerebrospinal Fluid Leptin Measurements: Dissociation of Concentrations in Central and Peripheral Compartments€ (2004, Vol. 89, pp. 258€“265)] reported on a study of the demographics of simultaneous and continuous 24-hour plasma and cerebrospinal fluid leptin measurements. The data follow:

(a) Test for significance of regression using α = 0.05. Find the P-value for this test. Can you conclude that the model specifies a useful linear relationship between these two variables?

(b) Estimate σ₂ and the standard deviation of β₁.

(c) What is the standard error of the intercept in this model?

Transcribed Image Text:

19.92 20.59 29.02 20.78 25.97 20.39 23.29 17.27 35.24 y = BMI (kg/m²): 45.5 34.6 40.6 32.9 28.2 30.1 52.1 33.3 47.0 X= Age (yr):