What is correct about F-test of overall validity of the model?

a. It is a two sided test of R-squared being zero versus not being zero.
b. It is one sided test of R-squared being zero versus being greater than zero.
c. A big F-statistic (bigger than critical value) means that the model has explanatory power.
d. In rare cases the value of F-statistic can be negative.

B

Step-by-step explanation:

It is one sided test of R-squared being zero versus being greater than zero.

These are the steps of the test.

1. State the null and alternative hypothesis: ...

2. Compute the test statistic: ...

3. Find a (1 - 0.05)×100% confidence interval for the test statistic. ...

4. Decide whether to accept or reject the null hypothesis: 5.991 ∉ [0, 2.28], so reject H 0 .

5. Determine the p-value.

we know that

major arc is defined as the bigger arc connecting two points on the edge of a circle. measure of major arc is always more than ° or π radian

in this problem

the mayor arc is bac

find the ratio of the measure of the major arc to the measure of the minor arc

therefore

the answer is the option