A construction company that installs drywall wanted to investigate how a person's age afects how much dry wall they can install in a week. On one hand, it would
seem that the younger workers would be able to install more, but it seems that
experience would also play a role. Two random samples were taken Assume the
distributions are normal
Age 18-22
Age 25-23
(sheets/week)
(sheets/week)
92
104
109
116
93
96
81
104
115
108
109
108
84
116
121
112
94
120
116
108
a) Set up the full and alternative hypotheses to see if there is a difference in the
average number of sheets of dry wall that a person can install per week based on
age