Instructions: Test the hypothesis of the given problems. Follow the steps in hypothesis testing. Include the illustration of the normal curve indicating the acceptance and rejection regions. Critical values of z: Level of Significance 0.05 0.01 0.10 Test Type One-Tailed +1.645 or -1.645 +2.33 or -2.33 +1.285 or -1.285 Two-Tailed +1.96 and -1.96 2.575 and -2.575 +1.645 and -1.645 1 . The average height of females in the freshman class of a certain college has been 162.5 cm with a standard deviation of 6.9 cm. Is there a reason to believe that there has been a change in the average height if a random sample of 50 females in the present freshman class have an average height of 165.2 cm? Use a 0.10 level of significance. 2. A commonly prescribed drug on the market for relieving nervous tension is believed to be 60% effective. Experimental results with a new drug administered to a random sample of 100 adults were suffering from nervous tension showed that 70% received relief. Is this sufficient evidence to conclude that the new drug is superior to the one commonly prescribed? Use a 0.05 level of significance