The manager of a bookstore with a coffee shop wants to know the proportion of customers that come in the store because of the coffee shop. A random sample of 75 customers was polled. Use Sheet 3 of the Excel file linked above to calculate p and the 95% confidence intery p = Ex: 1.234 Upper bound for 95% confidence interval = Ex: 1.234 Lower bound for 95% confidence interval = The manager can say with 95% confidence that the true population proportion of the customers that come into the store because of the coffee shop is in the interval EX: 1.234
The manager of a bookstore with a coffee shop wants to know the proportion of customers that come in the store because of the coffee shop. A random sample of 75 customers was polled. Use Sheet 3 of the Excel file linked above to calculate p and the 95% confidence intery p = Ex: 1.234 Upper bound for 95% confidence interval = Ex: 1.234 Lower bound for 95% confidence interval = The manager can say with 95% confidence that the true population proportion of the customers that come into the store because of the coffee shop is in the interval EX: 1.234
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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Transcribed Image Text:Critical values for quick reference during this activity.
Confidence level Critical value
0.90
2 = 1.645
0.95
2* = 1.960
0.99
2* = 2.576
Jump to level 1
The manager of a bookstore with a coffee shop wants to know the proportion of customers that come into
the store because of the coffee shop. A random sample of 75 customers was polled. Use Sheet 3 of the
Excel file linked above to calculate p and the 95% confidence intery S
Ex: 1.234
Upper bound for 95% confidence interval = Ex: 1.234
Lower bound for 95% confidence interval =
The manager can say with 95% confidence that the true population proportion of the customers that
come into the store because of the coffee shop is in the interval EX: 1.234
1
Check
Next
Transcribed Image Text:6:42 O
HG
60%i
confidence_interval_proportions (1)
fx
Come because
of coffee shop
M
ne becaus
t refler t
No
Yes
Yes
Yes
No
Yes
No
9
No
10
Yes
11
Yes
12
Yes
13
No
14
Yes
15
No
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No
17
Yes
18
Yes
19
No
20
No
21
No
22
Yes
23
No
24
Yes
25
Yes
26
Yes
27
No
28
Yes
29
Yes
30
Yes
31
Yes
32
No
33
Yes
34
No
35
Yes
36
Yes
37
Yes
BE
Yes
39
Yes
40
Yes
41
Yes
42
Yes
43
No
44
No
45
Yes
46
Yes
47
No
48
Yes
49
No
50
Yes
51
Yes
52
Yes
53
No
54
Yes
55
No
56
No
57
Yes
58
Yes
59
No
60
Yes
61
Yes
62
No
63
No
64
Yes
65
Yes
66
No
67
No
68
Yes
69
Yes
70
Yes
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Yes
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Yes
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Yes
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Yes
75
No
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No
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78
eet1
Sheet2
Sheet3
II
+
...
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