Write an example of a null hypothesis for a t test for the correlation coefficient.

In multiple regression,what does the parameter ² measure?

A) The variability of the responses about the population regression equation
B) The degrees of freedom associated with s²
C) The subpopulation means
D) None of the above

Any continuous random variable cannot take on negative values.

Under what condition is a permutation test for comparing two populations valid?

A) The populations have the same mean under the null hypothesis.
B) The populations are identical under the null hypothesis.
C) The two populations have the same standard deviation under both the null and alternative hypotheses.
D) Under all circumstances-the permutation test does not require any particular assumptions and hence is very powerful.