A fast-food chain has just developed a new process to make sure that orders at the drive-through
Question:
A fast-food chain has just developed a new process to make sure that orders at the drive-through are filled correctly. The previous process filled orders correctly 88% of the time. A sample of 100 orders using the new process is selected and 92 were filled correctly. At the 0.01 level of significance, can you conclude that the new process has increased the proportion of orders filled correctly?
(a) Describe an appropriate null hypothesis and alternative hypothesis.
(b) Calculate the test statistic
(c) Calculate the P-value
(d) What are your conclusions regarding the new process? Has the new process increased the proportion of correct orders? Explain your reasoning.
Quantitative Analysis for Management
ISBN: 978-0132149112
11th Edition
Authors: Barry render, Ralph m. stair, Michael e. Hanna