A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 P.M. lunch period. Management decides to first study the waiting time in the current process. The waiting time is defined as the number of minutes that elapses from when the customer enters the line until he or she reaches the teller window. Data are collected from a random sample of 15 customers at each branch. Complete parts (a) through (d) below. Click the icon to view the bank branch data. a. Assuming that the population variances from both banks are equal, is there evidence of a difference in the mean waiting time between the two branches? (Use a=0.01.) Let μ, be the mean waiting time of the commercial district branch and ₂ be the mean waiting time of the residential area branch. Determine the hypotheses. Choose the correct answer below. OA. Ho: #₁ #₂ H₁:₁₂ OC. Ho: #1 #₂ H₁: Pg P₂ Find the test statistic. ISTAT = (Round to two decimal places as needed.) OB. Ho: ₁2₂ H₁: #₁ #₂ D. Ho: P1 P2 H₁: #₁ #₂ Please copy and paste data from text area below. Selected delimiter: Tab Residential Commercial 4.18 9.98 5.74 5.78 3.11 8.21 5.52 8.87 3.77 5.42 4.96 2.72 D 3.36 D 3.07 4.33 6.07 0.44 5.04 6.36 6.19 3.97 8.19 8.34 10.55 6.65 5.68 4.05 6.37 9.97 5.38 X
A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 P.M. lunch period. Management decides to first study the waiting time in the current process. The waiting time is defined as the number of minutes that elapses from when the customer enters the line until he or she reaches the teller window. Data are collected from a random sample of 15 customers at each branch. Complete parts (a) through (d) below. Click the icon to view the bank branch data. a. Assuming that the population variances from both banks are equal, is there evidence of a difference in the mean waiting time between the two branches? (Use a=0.01.) Let μ, be the mean waiting time of the commercial district branch and ₂ be the mean waiting time of the residential area branch. Determine the hypotheses. Choose the correct answer below. OA. Ho: #₁ #₂ H₁:₁₂ OC. Ho: #1 #₂ H₁: Pg P₂ Find the test statistic. ISTAT = (Round to two decimal places as needed.) OB. Ho: ₁2₂ H₁: #₁ #₂ D. Ho: P1 P2 H₁: #₁ #₂ Please copy and paste data from text area below. Selected delimiter: Tab Residential Commercial 4.18 9.98 5.74 5.78 3.11 8.21 5.52 8.87 3.77 5.42 4.96 2.72 D 3.36 D 3.07 4.33 6.07 0.44 5.04 6.36 6.19 3.97 8.19 8.34 10.55 6.65 5.68 4.05 6.37 9.97 5.38 X
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
100%
A. Find the TStat
B. Find the p-value
C. What are the critical values
Transcribed Image Text:A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 P.M. lunch period. Management decides to first study the waiting time in the current process. The waiting
time is defined as the number of minutes that elapses from when the customer enters the line until he or she reaches the teller window. Data are collected from a random sample of 15 customers at each branch. Complete parts (a) through (d) below.
Click the icon to view the bank branch data.
a. Assuming that the population variances from both banks are equal, is there evidence of a difference in the mean waiting time between the two branches? (Use α=0.01.)
Let μ, be the mean waiting time of the commercial district branch and ₂ be the mean waiting time of the residential area branch. Determine the hypotheses. Choose the correct answer below.
OA. Ho: H₁ H¹₂
H₁: H₁ H₂
OC. Ho: H₁ H₂
H₁: H₁ H₂
C
Find the test statistic.
tSTAT =
(Round to two decimal places as needed.)
O
B. Ho: H2H2
H₁: H₁ H₂
D. Ho: H₁ H₂
H₁ H₁ H₂
Please copy and paste data from text area below.
Selected delimiter: Tab
Residential
Commercial
4.18
5.74
3.11
5.42
4.96
2.72
3.36
3.07
4.33
6.07
0.44
5.04
6.36
6.19
3.97
9.98
5.78
8.21
5.52
8.87
3.77
8.19
8.34
10.55
6.65
5.68
4.05
6.37
9.97
5.38
X
Expert Solution
Step 1: Define the formula of the test statistic
The formula of the two sample t test is,
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