Hypothesis Testing. Perform Hypothesis Testing on the following problems. Follow the procedures for testing hypothesis. Aside from the critical value, use the p-value also to make the decision. 1. A company that manufactures bottled drinks would like to increase their sales, so they decided to have a new advertising campaign for their products. Before the new ad campaign was launched, the company's average monthly sales amounts to P 1.5 M. After the new ad campaign was shown to the public, they recorded the sales for 12 months and found out that the average monthly sales increased to P 2.3 M with a standard deviation of P 350,000. At 1% level of significance, test if the increase in the sales is because of the new ad campaign. Given: x = 2.3 # = 1.5 s = 350000 n = 12 Ho: 1 = 1.5 M Ha: [ > 1.5 M a = 0.99 Critical Value: 2.72 T test: (one-tailed/right hand tail test) (2 309.000-1.500,009),12 3500 0 1 2771201.292 350000 [ = 7.92 7.92 > 2.72