The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 85.1 seconds. A manager devises a new drive-through system that she believes will decrease wait time. As a test, she initiates the new system at her restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. Click the icon to view the table of correlation coefficient critical values. = 85.1 < 85.1 *** to = (Round to two decimal places as needed.) 105.0 67.7 56.7 73.4 65.9 Time (sec) 80.1 (b) is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance of a=0.1. First determine the appropriate hypotheses. Ho P H₁: P Find the test statistic. 86.2 69.5 78.6
The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 85.1 seconds. A manager devises a new drive-through system that she believes will decrease wait time. As a test, she initiates the new system at her restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. Click the icon to view the table of correlation coefficient critical values. = 85.1 < 85.1 *** to = (Round to two decimal places as needed.) 105.0 67.7 56.7 73.4 65.9 Time (sec) 80.1 (b) is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance of a=0.1. First determine the appropriate hypotheses. Ho P H₁: P Find the test statistic. 86.2 69.5 78.6
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.1: Stem-and-leaf Plots And Histograms
Problem 13E
Related questions
Question
Find the test statistic & p-value
Transcribed Image Text:The mean waiting time at the drive-through of a fast-food restaurant from the time an order is
placed to the time the order is received is 85.1 seconds. A manager devises a
new drive-through system that she believes will decrease wait time. As a test, she initiates the
new system at her restaurant and measures the wait time for 10 randomly selected orders. The
wait times are provided in the table to the right. Complete parts (a) and (b) below.
Click the icon to view the table of correlation coefficient critical values.
= 85.1
< 85.1
***
to =
(Round to two decimal places as needed.)
105.0
67.7
56.7
73.4
65.9
Time (sec)
80.1
(b) is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance
of a=0.1.
First determine the appropriate hypotheses.
Ho
P
H₁: P
Find the test statistic.
86.2
69.5
78.6
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