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 88.9 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. the sampit LURTOGLU LUCHLICH AUDI-V.OUT. nie die uns I want to be Yes, the conditions satisfied The normal probability plot are In addition, a boxplot does not show any outliers Но н H₂H Find the test statistic (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. = 88.9 <88.9 H IS (Round to two decimal places as needed.). linear enough, since the correlation coefficient is greater than the critical value 2- 1- 0- -1- 108.1 66.4 57.1 73.7 67.4 Expected z-score 60 75 sol 105 A Time (sec) 80.8 94.1 84.3 71.7 86.4 Q Q G
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 88.9 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. the sampit LURTOGLU LUCHLICH AUDI-V.OUT. nie die uns I want to be Yes, the conditions satisfied The normal probability plot are In addition, a boxplot does not show any outliers Но н H₂H Find the test statistic (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. = 88.9 <88.9 H IS (Round to two decimal places as needed.). linear enough, since the correlation coefficient is greater than the critical value 2- 1- 0- -1- 108.1 66.4 57.1 73.7 67.4 Expected z-score 60 75 sol 105 A Time (sec) 80.8 94.1 84.3 71.7 86.4 Q Q G
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Find the test statistic
Transcribed Image Text:Critical values
Sample Size, n Critical Value
5
0.880
6
0.888
7
8
9
10
11
12
13
14
15
0.898
0.906
0.912
0.918
0.923
0.928
0.932
0.935
0.939
Sample Size, n
16
17
18
19
20
21
22
23
24
25
30
Critical Value
0.941
0.944
0.946
0.949
0.951
0.952
0.954
0.956
0.957
0.959
0:960
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 88.9 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.
at sampit CUITGALIO LUGHLIGHS DGI-V.JUT. NIC O LUIS Vitung und my
Yes, the conditions
satisfied. The normal probability plot
are
In addition, a boxplot does not show any outliers.
= 88.9
<< 88.9
-
Ho- μ
H₁= H
Find the test statistic.
(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.
IS
to =
(Round to two decimal places as needed.)
linear enough, since the correlation coefficient is greater than the critical value.
A Expected z-score
24
1-
10-
-1-
108.1
66.4
57.1
73.7
67.4
-2-
60 75 90 105
Time (sec)
80.8
94.1
84.3
71.7
86.4
Q
Q
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