Answered: The National Bank of Zachary has opened…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The National Bank of Zachary has opened up two new drive-through teller windows
outside its main office building in downtown Zachary. The bank is not sure that it needs both windows
open all days so it has decided to conduct a work sampling study to 11:30 am and 1:00 pm to 3:00 pm.
The work sampling study was conducted at random over a 5-day period and the following
observations were recorded. Bank management wants the study to be 5 percent accurate with a 95
percent confidence level. How many additional sample observations should be taken? Table is attached.

ObservationTellers Idle
Observation Tellers Idle
1
1
16
1
2
1
17
2
3
18
2
4
19
5
0
20
6
21
7
22
8
2
23
2
9
24
10
1
25
11
1
26
12
1
27
13
2
28
2
14
2
29
15
ㅇ
30
2
N N o 1 N N N C r o N O N
o O o N r N N P

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