Question
In: Math
(Answers are given but could you please work through the problem and show me the steps?)...
(Answers are given but could you please work through the problem and show me the steps?)
Chapter 8
A local health center noted that in a sample of 400 patients, 80
were referred to them by the local hospital.
|
a. |
Provide a 95% confidence interval for all the patients who are referred to the health center by the hospital. |
|
b. |
What sample size would be required to estimate the proportion of all hospital referrals to the health center with a margin of error of .04 or less at 95% confidence? |
|
ANSWER: |
|
A simple random sample of 36 items resulted in a sample mean of 40 and a standard deviation of 12. Construct a 95% confidence interval for the population mean.
|
ANSWER: |
35.94 to 44.06 |
Six hundred consumers belonging to the 25-34 age group were
randomly selected in a city and were asked whether they would like
to purchase a domestic or a foreign automobile. Their responses are
given below.
|
Preference |
Frequency |
|
Domestic |
240 |
|
Foreign |
360 |
Develop a 95% confidence interval for the proportion of all such consumers who prefer to purchase domestic automobiles.
|
ANSWER: |
.3608 to .4392 |
Solutions
milcah answered 1 year agoRelated Solutions
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Subject
1
2
3
4
5
6
7
8
9
10
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49
37
16
80
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40
58
31
21
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25
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22
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