Question
In: Statistics and Probability
A simple random sample of size n is drawn. The sample mean, x overbar, is found...
A simple random sample of size n is drawn. The sample mean, x overbar, is found to be 18.4, and the sample standard deviation, s, is found to be 4.8.
Construct a 95% confidence interval about μ if the sample size, n, is 34.
Solutions
Expert Solution
We have given that,
Sample mean =18.4
Sample standard deviation =4.8
Sample size =34
Level of significance=1-0.95=0.05
Degree of freedom =33
t critical value is (by using t table)=
2.035
Confidence interval formula is
=(16.72,20.08)
orchestra answered 2 years agoRelated Solutions
A simple random sample of size n is drawn. The sample mean, x overbar, is found...
A simple random sample of size n is drawn. The sample mean, x
overbar, is found to be 18.9, and the sample standard deviation,
s, is found to be 4.4.
a) Construct a 95% confidence interval about mu if the sample
size, n, is 34. Lower bound: nothing; Upper bound: nothing (Use
ascending order. Round to two decimal places as needed.)
(b) Construct a 95% confidence interval about mu if the
sample size, n, is 61. Lower bound: nothing; Upper...
A simple random sample of size n is drawn. The sample mean, x overbar x, is...
A simple random sample of size n is drawn. The sample mean, x
overbar x, is found to be 17.8, and the sample standard
deviation, s, is found to be 4.9.
(a) Construct a 95% confidence interval about mu μ if the
sample size, n, is 34.
Lower bound=
Upper bound=
(Use ascending order. Round to two decimal places as
needed.)
(b) Construct a 95% confidence interval about mu μ if the
sample size, n, is 61.
Lower bound=
Upper...
A simple random sample of size n is drawn. The sample mean, x, is found to...
A simple random sample of size n is drawn. The sample mean, x,
is found to be 18.5, and the sample standard deviation, s, is
found to be 4.6.
(a) Construct a 95% confidence interval about μ if the sample
size, n, is 34.
Lower bound: ___
Upper bound: ___
(Use ascending order. Round to two decimal places as
needed.)
(b) Construct a 95% confidence interval about μ if the sample
size, n, is 61.
Lower bound: ___
Upper bound:...
A simple random sample of size n is drawn. The sample mean, x, is found to...
A simple random sample of size n is drawn. The sample
mean, x, is found to be 35.1, and the sample standard deviation, s,
is found to be 8.7
a) Construct a 90% confidence interval for μ if the
sample size, n, is 100.
b) Construct a 90% confidence interval for μ if the
sample size, n, is 40. How does decreasing the sample size affect
the margin of error, E?
c) Construct a 96% confidence interval for μ if...
A simple random sample of size n is drawn. The sample mean, x , is found...
A simple random sample of size n is drawn. The sample mean, x
, is found to be 18.5 , and the sample standard deviation, s, is
found to be 4.3.
(a) Construct a 95% confidence interval about mean if the
sample size, n, is 35.
(b) Construct a 95% confidence interval about mean if the
sample size, n, is 71. How does increasing the sample size affect
the margin of error, E?
(c) Construct a 99% confidence interval about...
A simple random sample of size n is drawn. The sample mean, x is found to...
A simple random sample of size n is drawn. The sample mean, x
is found to be 19.3 and the sample standard deviation, s, is found
to be 4.7
a. Construct a 95% confidence interval about mu if the sample
size, n, is 35
A simple random sample of size n is drawn. The sample mean, x overbarx, is found...
A simple random sample of size n is drawn. The sample mean, x
overbarx, is found to be 18.5, and the sample standard
deviation, s, is found to be 4.3.
(a) Construct a 95% confidence interval about muμ if the
sample size, n, is 34.
Lower bound: ____
Upper bound: ____
(b) Construct a 95% confidence interval about muμ if the
sample size, n, is 51.
Lower bound: ____
Upper bound: ____
(c) Construct a 99% confidence interval about muμ...
A simple random sample of size n is drawn. The sample mean, x overbarx, is found...
A simple random sample of size n is drawn. The sample mean,
x overbarx,
is found to be
18.618.6,
and the sample standard deviation, s, is found to be
4.84.8.
LOADING...
Click the icon to view the table of areas under the
t-distribution.
(a) Construct a
9595%
confidence interval about
muμ
if the sample size, n, is
3434.
Lower bound:
nothing;
Upper bound: nothing
(Use ascending order. Round to two decimal places as
needed.)
(b) Construct a
9595%
confidence interval...
A simple random sample of size n is drawn. The sample mean is found to be...
A simple random sample of size n is drawn. The sample mean is
found to be 17.6, and the sample standard deviation, s, is found
to be 4.7.
A). Construct a 95% confidence interval about if the sample
size, n, is 51.
A simple random sample of size n is drawn. The sample mean is found to be...
A simple random sample of size n is drawn. The sample mean is
found to be 17.6, and the sample standard deviation, s, is found
to be 4.7.
Construct a 99% confidence interval about if the sample size,
n, is 34.
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- JAVA If a user inputs a specific number of rows, columns and sections for a rectangle...
- A stock costs $80 and pays a $4 dividend each year for three years. a) If...
- A solid cylinder, mass of 15 kg, is on a hill that is inclined at a...
- Discuss the difference between a)FAT, FAT32, NTFS, CDFS, etc., b)What make them diferent and why they...
- 2. Given the Instruction sets for Machine-1, Machine-2 and Machine-3, write programs to calculate: P= ((B×C)...
- Problem III. Suppose that, in a market of a certain good, there are firms that are...
- discusses the difference between public relations and advertising. Cite an organization or individual and give one...
ADVERTISEMENT