Encyclopedias are a secondary source

A lawsuit a shareholder brings against an offending party on behalf of a corporation when the corporation itself fails to bring the lawsuit is known as a ________

A) notice of the shareholder B) derivative action C) class action suit D) contract action

If we are testing for the difference between the means of 2 independent populations presuming equal variances with samples of n1 = 20 and n2 = 20, the number of degrees of freedom is equal to

A) 19. B) 18. C) 38. D) 39.