Concept explainers
Refer to the three models given in Exercise 11.88. Let
a.
b.
c.
Television advertising would ideally be aimed at exactly the audience that observes the ads. A study was conducted to determine the amount of time that individuals spend watching TV during evening prime-time hours. Twenty individuals were observed for a 1-week period, and the average time spent watching TV per evening, Y, was recorded for each. Four other bits of information were also recorded for each individual: x1 = age, x2 = education level, x3 = disposable income, and x4 = IQ. Consider the three models given below:
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Mathematical Statistics with Applications
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