Read and understand the problems carefully. Work on the problems and follow the step-by-step procedures - from null hypothesis to recommendations.

1. A copier machine operator claimed that he makes an average number of copies of at least 5000 per day with standard deviation of 75 copies. To make sure that he has enough supplies and understocking, he monitored the number of copies he produced for 30 days which was noted at an average of 5105. At a .05 level of significance, is the average number of copies produced per day is different from 5000?