53. The following data relate the systolic blood pressure to the age (x1) and weight

(x2) of a set of individuals of similar body type and lifestyle.

(a) Test the hypothesis that, when an individual’s weight is known, age gives no additional information in predicting blood pressure

(b) Determine an interval that, with 95 percent confidence, will contain the average blood pressure of all individuals of the preceding type that are 45 years old and weigh 180 pounds.

(c) Determine an interval that, with 95 percent confidence, will contain the blood pressure of a given individual of the preceding type who is 45 years old and weighs 180 pounds.

Transcribed Image Text:

Age Weight Blood Pressure 25 162 112 25 184 144 42 166 138 55 150 145 30 192 152 40 155 110 66 184 118 60 202 160 38 174 108