In what follows use any of the following tests: Regression, Multiple Regression, one-sided t-test, or two-sided t-test. All conclusions should be based on a 5% P-value threshold. 1. Perform two-sided t-test comparing the birth order and sex columns. What is the P-value?

a. 1
b. 0.5
c. 0.000794488
d. None of these

2. Perform regression where X-axis is the birth order and Y-axis is the sex (gender). What is the P-value related to the slope?

a. 1
b. 0.5
c. 0.000794488
d. None of these