A. complete the table

Type of Tabular Test Sample Hypotheses Level of Value Decision (one-tailed Size Significance (Reject Ho or or two- Test Value (values n obtained Fail to reject tailed) from the z- Ho) Ho : H = 78 or t-table) H: u 75 H. : P = 0.10 18 0.05 Zo =2.55 H. : p > 0.10 H. : P = 0.60 100 0.05 Zo =-1.02 H . : p * 0.60Directions: Solve the following problems completely. 1. (17 points) The proportion of students who passed an engineering examination was 80%. Students complained that they would have done better if they were allowed to use calculators. Later, a random sample of 90 students took this exam with calculators and 75 passed. Was this a significant improvement at 0.05 level? 2. (18 points) It is claimed that the average time spent by employees on telephone calls is less than 6 minutes. In a study time spent on the telephone by its employees, a large office monitors a random sample of 25 employee calls and finds the mean length of these calls to be 5.8 minutes with a standard deviation of 1.4 minutes. Is the claim true at 0.05 level of significance