Students must use the appropriate calculator function as shown in the appropriate class lecture video(s). Give a full solution including full calculator syntax and START solution by stating (and checking those you can) ALL the assumptions required for the result given to be truly valid. Type the full and complete solution in the provided essay box. No file and/or picture uploads are allowed, you must type out your full and complete solution. Question: A simple random sample of 32 postal employees showed their average time working for the postal service was 7.22 years with a standard deviation of 1.52 years. Estimate the true mean working time for postal service with 91% confidence and give full calculator syntax and give the proper interpretation of the confidence interval