We conduct the following -test:

Which null-hypothesis are we testing with in this -test?

Question

We conduct the following   -test:

Which null-hypothesis are we testing with in this   -test?

Answer

Expected value of sleep time conditional on work time and age is a quadratic function of age.

Answer

Given work time, age is not a significant predictor of sleep time.

Answer

Expected value of sleep time conditional on work time and age is a linear function of age.

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