Question: a manufacturing company wishes to find out whether the productivity...
A manufacturing company wishes to find out whether the productivity of its workforce has increased now that they have a new machine. The factory examined the records for a random sample of 10 hours over the past month. The hourly production rates for these 10 hours were:
142 175 162 158 190 154 160 185 173 181
Suppose the production rate before the use of the new machine is 155 units per hour. Test at 5% if the new machine has increased workers’ productivity on average using both the:
(a) p-value approach, and
(b) critical value approach.
Note: For part (a), you should use the “t-dist” function in excel.