Question

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(e) A 95% confidence interval for A can be computed as [A-1 .96-Var(31), A + 1.96 Var (A)] O True O False (f) Suppose you run a regression of health status (Y) on a binary indicator for whether and individual has health insurance (X). Assuming that the sample is i.i.d. and that large outliers are unlikely, the coefficient has a descriptive interpretation. O True O False

Answer 1

Ans:

e)False

We use t distribution for slope coefficient,not z.

Also,critical t value depends on degree of freedom(i.e. df=n-1)

f)False

If the t-test for a regression coefficient is not statistically significant, it is not appropriate to interpret the coefficient. A better alternative might be to say, "No statistically significant linear dependence of the mean of Y on x was detected.