A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers. 1 2 3 4 4.5 4.6 4.5 4.7 4.2 4.5 4.6 4.6 4.2 4.4 4.4 4.8 4.3 4.7 4.4 4.5 4.3 4.3 4.6 4.9 What alpha risk would control limits 4.14 and 4.86 provide? Using limits of 4.14 and 4.86, are any sample means beyond the control limits? If so, which one(s)? Construct control charts for means and ranges using Table 10.3. Are any samples beyond the control limits? If so, which one(s)?
A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers. 1 2 3 4 4.5 4.6 4.5 4.7 4.2 4.5 4.6 4.6 4.2 4.4 4.4 4.8 4.3 4.7 4.4 4.5 4.3 4.3 4.6 4.9 What alpha risk would control limits 4.14 and 4.86 provide? Using limits of 4.14 and 4.86, are any sample means beyond the control limits? If so, which one(s)? Construct control charts for means and ranges using Table 10.3. Are any samples beyond the control limits? If so, which one(s)?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers.
1 |
2 |
3 |
4 |
4.5 |
4.6 |
4.5 |
4.7 |
4.2 |
4.5 |
4.6 |
4.6 |
4.2 |
4.4 |
4.4 |
4.8 |
4.3 |
4.7 |
4.4 |
4.5 |
4.3 |
4.3 |
4.6 |
4.9 |
- What alpha risk would control limits 4.14 and 4.86 provide?
- Using limits of 4.14 and 4.86, are any sample means beyond the control limits? If so, which one(s)?
- Construct control charts for means and
ranges using Table 10.3. Are any samples beyond the control limits? If so, which one(s)?
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