What is the null hypothesis of this test design?

An advertiser is running an A/B test on Facebook with the goal of finding whether creative strategy A or B achieves the most conversions.

What is the null hypothesis of this test design?
A . Conversions (A) = Conversions (B)
B . Conversions (A) <> 0, Conversions (B) <> 0
C . Conversions (A) = 0, Conversions (B) = 0
D . Conversions (A) <> Conversions (B)

View Answer

Answer: C