Table gives information of pa
Total
available Votes polled
Valid votes
Village | votes (in'000) (in %)
(in %)
50
70
80
B
40
75
60
C
75
80
75
100
75
72
E
80
90
70
Total votrs polled
Note- 1. Percentage of votes polled
X 100
Total arailable fores
Tosal vald votes
2. Percentage of valid votes =
X 100
Toral votes pollad
Find the ratio of invalid votes of village Ato that of village D.
1.3:5
2.1:3
3.6:7
4.4:5
5. None of these
Answers
Answer:
a) For a 95% confidence interval we use the formula
First we need to establish the sample proportion
The sample size is
n = 200
and the critical value of z for a 95% confidence interval is
z* = 1.960
This gives us
This gives us an upper confidence limit of
.525 + .069 = .594 or 59.4%
and a lower confidence limit of
.525 - .069 = .456 or 45.6%
b) At this point her supporters wonder what her chances of winning are. 45.6% is below 50%, so she might lose. To find her chances of losing, consider the bell shaped curve
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Step-by-step explanation:
a) For a 95% confidence interval we use the formula
First we need to establish the sample proportion
The sample size is
n = 200
and the critical value of z for a 95% confidence interval is
z* = 1.960
This gives us
This gives us an upper confidence limit of
.525 + .069 = .594 or 59.4%
and a lower confidence limit of
.525 - .069 = .456 or 45.6%
b) At this point her supporters wonder what her chances of winning are. 45.6% is below 50%, so she might lose. To find her chances of losing, consider the bell shaped curve
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