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GROUP ACTIVITY : A. Express the null hypothesis Ho and the alternative hypothesis H, in notation form in the given scenario. Indicate if it is a left- tailed test or right - tailed test . 1. The claim that more than 43% of all Filipinos males become bald at old age is a claim about the proportion ( parameter) of all Filipino males ( population) who are bald at old age . 2. A sample of 25 recipes from a burger stand has a mean ( in peso) u = 5,000 and a standard deviation ( in peso)o = 800.Use these values to test whether or not the mean sales of the burger stand are different from Php 5, 000