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IV. PROBLEM SOLVING Problem 1: Find the computed t-value and z-value of the following. (25-27) t-value = Sample mean = 17.1 Pop. mean = 16.21 s = 1.37 n = 20 (28-30) z-value = Sample mean = 23.51 Pop. mean = 18.7 S.D = 3.47 n = 38 Problem 2: Determine the decision for each of the following given the computed and critical value of the z and t. (31-33) Computed z = 11.1 and Critical z = 12.9 (34-36) Computed z = 21.3 and Critical z = 77.7 (37-39) Computed z = 1.3 and Critical z = 2.1 Problem 3: The average height of SHS students is 17 years and older is 163cm for males. Is this claim true? State the null and alternative hypothesis in notations for each given situation. (40-42) Parameter (43-44) Symbol (45-47) Null hypothesis (in words) (48-50) Alternative Hypothesis (in words)