2. Solve and explain the following: a. In a test of H : u = 80 against H,: u

2. 3. 4. Solve and explain the following: a. b. In a test of Ho.p = 80 against Hi: p < 80. the sample data yielded the test statistic z = 1.63. What is the p-value for the test? In a test of H : p = 80 against H : p80. the sample of observations had a mean = 81 and standard deviation s = 4. I. What is the p-value for this test? A politician claims that she will receive 60% of the votes in the upcoming election. Of a random sample of 200 voters. there were 100 who will surely vote for her. Test the politician's assertion at the 0.05 level Of significance. A social worker reports that 30% of workers in a factory are below 15 years of age. Of the 120 employees surveyed, 38 said they were below 15 years old. using a = O. 05, interpret the pvalue.