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
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.
Step by Step Solution
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There are 3 Steps involved in it
Step: 1
Given population proportion P 088 and X 92 n 100 and 001 So P bar Xn 92100 ...
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Authors: Barry Render, Ralph M. Stair, Michael E. Hanna
11th Edition
9780132997621, 132149117, 132997622, 978-0132149112
