single waiting line that feeds three telle dard deviation of waiting times at the same bank when separate waiting lines are used selected from a normally distributed population. Complete parts (a) through (d) below. X stomer Waiting Times Customer Waiting Times (in minutes) 7.8 7.4 6.8 7.3 7.2 6.3 6.2 6.9 7.4 6.8 8.4 6.4 7.9 7.6 5.3 6.4 7.1 6.8 7.7 8.3 8.9 6.7 7.5 7.6 6.8 7.8 6.1 7.4 6.3 7.5 Print 8.8 6.5 7.4 5.9 5.8 7.3 6.7 6.8 6.6 7.5 7.5 6.8 7.9 6.8 6.6 Done MacBook Air 767 7.3 38 6.8 7.5 7.3 6.8 ان ان 8.9 7.8 6.8 7.8 6.3 7.6 6.6 6.3 6.1 7.9
single waiting line that feeds three telle dard deviation of waiting times at the same bank when separate waiting lines are used selected from a normally distributed population. Complete parts (a) through (d) below. X stomer Waiting Times Customer Waiting Times (in minutes) 7.8 7.4 6.8 7.3 7.2 6.3 6.2 6.9 7.4 6.8 8.4 6.4 7.9 7.6 5.3 6.4 7.1 6.8 7.7 8.3 8.9 6.7 7.5 7.6 6.8 7.8 6.1 7.4 6.3 7.5 Print 8.8 6.5 7.4 5.9 5.8 7.3 6.7 6.8 6.6 7.5 7.5 6.8 7.9 6.8 6.6 Done MacBook Air 767 7.3 38 6.8 7.5 7.3 6.8 ان ان 8.9 7.8 6.8 7.8 6.3 7.6 6.6 6.3 6.1 7.9
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
Related questions
Question
Transcribed Image Text:single waiting line that feeds three telle
dard deviation of waiting times at the same bank when separate waiting lines are used
selected from a normally distributed population. Complete parts (a) through (d) below.
X
stomer Waiting Times
6.8
7.3
7.2
6.3
6.2
6.9
Customer Waiting Times
(in minutes)
7.8
7.4
7.4
6.8
8.4
6.4
7.9
7.6
5.3
6.4
7.1
6.8
7.7
8.3
8.9
6.7
7.5
7.6
6.8
7.8
6.1
7.4
6.3
7.5
Print
8.8
6.5
7.4
5.9
5.8
7.3
6.7
6.8
6.6
7.5
7.5
6.8
7.9
6.8
6.6
Done
MacBook Air
NON
7.3
38
6.8
7.5
7.3
6.8
8.9
99
7.8
6.8
7.8
6.3
7.6
6.6
6.3
6.1
7.9
Transcribed Image Text:K
The data table contains waiting times of customers at a bank, where customers enter a single waiting line that feeds three teller windows. Test the claim that the standard deviation of waiting times is
less than 1.4 minutes, which is the standard deviation of waiting times at the same bank when separate waiting lines are used at each teller window. Use a significance level of 0.025. Assume that
the sample is a simple random sample selected from a normally distributed population. Complete parts (a) through (d) below.
Click on the icon to view the data.
a. Identify the null and alternative hypotheses. Choose the correct answer below.
OA. Ho: <1.4 minutes
HA: O=1.4 minutes
OC. Ho: o=1.4 minutes
HA: 01.4 minutes.
G
OB. Ho: 021.4 minutes
HA: 01.4 minutes
OD. Ho: o=1.4 minutes
HA: 01.4 minutes
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