Textbook ExpertVerified Tutor
10 Nov 2021
Given information
From the previous task, the minimum sample size required to construct a 90% confidence interval for the population proportion within 0.05 is found to be 271. The confidence level is now increased. The task is to predict the effect of the same on the minimum sample size.
Step-by-step explanation
Step 1.
The formula for the minimum sample size n for a population proportion is:
where 
are the probabilities of success and failure respectively, 
is the critical z value for the confidence level and 
is the error bound or the margin of error.
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
Solutions
Chapter
Section
- Problem 1a
- Problem 1b
- Problem 1c
- Problem 2
- Problem 3
- Problem 4
- Problem 5
- Problem 6a
- Problem 6b
- Problem 6c
- Problem 7
- Problem 8
- Problem 9
- Problem 10
- Problem 11
- Problem 12
- Problem 13a
- Problem 13b
- Problem 13c
- Problem 14
- Problem 15
- Problem 16
- Problem 17
- Problem 18
- Problem 19
- Problem 20
- Problem 21
- Problem 22
- Problem 23
- Problem 24
- Problem 25
- Problem 26
- Problem 27
- Problem 28
- Problem 29
- Problem 30
- Problem 31
- Problem 32
- Problem 33
- Problem 34
- Problem 35
- Problem 36
- Problem 37
- Problem 38
- Problem 39
- Problem 40
- Problem 41
- Problem 42
- Problem 43a
- Problem 43b
- Problem 43c
- Problem 43d
- Problem 44
- Problem 45
- Problem 46
- Problem 47
- Problem 48
- Problem 49a
- Problem 49b
- Problem 49c
- Problem 50
- Problem 51
- Problem 52
- Problem 53
- Problem 54
- Problem 55
- Problem 56a
- Problem 56b
- Problem 56c
- Problem 57
- Problem 58
- Problem 59
- Problem 60
- Problem 61
- Problem 62
- Problem 63
- Problem 64a
- Problem 64b
- Problem 64c
- Problem 65
- Problem 66
- Problem 67
- Problem 68
- Problem 69
- Problem 70
- Problem 71
- Problem 72
- Problem 73
- Problem 74
- Problem 75
- Problem 76
- Problem 77
- Problem 78
- Problem 79
- Problem 80
- Problem 81a
- Problem 81b
- Problem 81c
- Problem 82
- Problem 83
- Problem 84
- Problem 85
- Problem 86
- Problem 87
- Problem 88a
- Problem 88b
- Problem 88c
- Problem 89
- Problem 90
- Problem 91
- Problem 92
- Problem 93
- Problem 94