QUESTION 49 1 POINT Lexie gets 2.3 likes per day, on average, on a Facebook ad she pays for, with a standard deviation of 0.7. She decided to see if using a new ad would decrease her average. She used the new ad for 15 days. For those 15 days, Lexie got an average of 1.9 likes. She wants to know if the new ad reduced her number of likes each day. Lexie conducts a one-mean hypothesis at the 10% significance level, to test if the new ad helped her get more likes each day. Ho p=2.3; H,