Many fast-food restaurants have soft drink dispensers with preset amounts, so that when the operator merely pushes
Question:
Many fast-food restaurants have soft drink dispensers with preset amounts, so that when the operator merely pushes a button for the desired drink the cup is automatically filled. This method apparently saves time and seems to increase worker productivity. To test this conclusion, a researcher randomly selects 18 workers from the fast-food industry, 9 from a restaurant with automatic soft drink dispensers and 9 from a comparable restaurant with manual soft drink dispensers. The samples are independent. During a comparable hour, the amount of sales rung up by the worker is recorded. Assume that a = .01 and that a t test is not appropriate. Test whether workers with automatic dispensers are significantly more productive (higher sales per hour).
Automatic Dispenser Manual Dispenser
$153 ............. $105
128 .............118
143 .............129
110 .............114
152 .............125
168 .............117
144 .............106
137 ............. 92
118 .............126
Step by Step Answer:
Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black