1. A point estimate is:

A.A formula

B.A range of numbers

C.A single number

D.A parameter

9.Consider a random variable X normally distributed with mean 3 and variance 10. Then we have that:

A. P(X5) = P(X-5)

B.P(X=3) =0

C.P(X = 3) =1

D.P(X5) = P(X5)

10.A Cross sectional data set containing information about 100 individuals on wages and education level:

A. Can suffer from the error autocorrelation problem

B. Allows to observe whether individuals with different education levels have different wages

C. Provides information about each individual's wage changes over time, after changes in education.

D. Cannot be a random sample