A surveying engineer developed a new method for measuring orthometric heights. For a sample of 1225 measurements, 935 gave a result that was within the tolerance limits. To be acceptable, the method must produce results within the tolerance limits more than 75% of the time. 1.1 The engineer would like to prove that the test is acceptable. Write the null and alternate hypotheses for this test. 1.2 The engineer finds a z calc value 1.07. At a confidence level of 95%, the tcrit value is 1.645. Should the null hypothesis be rejected at this confidence level?