Activity 4: Find My Value! mine the test statistic used. Then, find the value of the following based on information. H:H=85 Ha: 85 The sample mean is 83, the sample size is 39, and the standard deviat is 5. Use a 0.05. Ho: = 7.5 Ha: >7.5 The sample mean is 8.3 and the sample size is 52. The population follow normal distribution with a standard deviation 3.17. Use a = 0.01. -H₂=15 Ha: ​