Question

Listed below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The ratings were obtained at one university in a state. Construct a confidence interval using a 90 % confidence level. What does the confidence interval tell about the population of all college students in the state? 3.8 , 2.9 , 4.1 , 5.0 , 3.0 , 4.3 , 3.5 , 4.5 , 4.5 , 4.4 , 4.5 , 4.0 , 3.1 , 3.8 , 4.0 What is the confidence interval for the population mean mu ?

Answer #1

*Solution:*

**From the sample data**

= 3.960 , S = 0.531

t critical value at 0.10 level with 14 df = 1.761

90% Confidence interval for is

- t * S / sqrt(n) < < + t * S / sqrt(n)

3.960 - 1.761 * 0.531 / sqrt(15) < < 3.960 + 1.761 * 0.531 / sqrt(15)

**3.71 <
< 4.20**

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Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a 95%
confidence level. What does the confidence interval tell about the
population of all college students in the state? 3.9, 3.0, 3.8,
5.0, 2.9, 4.2, 3.7, 4.6, 4.2, 4.3, 4.5, 4.1, 3.1, 4.3,
3.6 What is the confidence interval for the population mean u?

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a 95%
confidence level. What does the confidence interval tell about the
population of all college students in the state? 3.6, 3.1, 3.9,
4.5, 3.0, 4.3, 3.5, 4.7, 4.2, 4.1, 4.3, 3.6, 3.4, 3.7, 3.6
What is the confidence interval for the population mean mu?

Listed below are student evaluation ratings of courses, where
a rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a 95%
confidence level. What does the confidence interval tell about the
population of all college students in the state?
3.9, 3.1, 3.7, 4.4, 3.2, 4.4, 3.7, 5.0, 4.7, 4.5, 4.1, 3.9,
3.3, 3.7, 4.0
What is the confidence interval for the population mean
mu
μ?

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a 99%
confidence level. What does the confidence interval tell about the
population of all college students in the state?
3.8, 2.8, 4.2, 4.6, 3.1, 4.0, 3.6, 4.9, 4.8, 4.1, 4.6, 4.0, 3.2,
3.7, 3.5
What is the confidence interval for the population mean μ?
___<mu<____

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a 90%
confidence level. What does the confidence interval tell about the
population of all college students in the state?
3.5, 2.9, 4.2, 5.0, 3.1, 4.0, 3.7, 4.7, 4.1, 3.9,
4.1, 3.6, 3.1, 4.1, 4.0
What is the confidence interval for the population mean μ?
? < μ <...

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." Using the bootstrap method with
200 bootstrap samples, construct a
95
%
confidence interval estimate of
mu
.
How does the result compare to the confidence interval
3.62
less thanmuless than4.23
constructed using only the original sample data?
3.6
3.1
4.0
4.8
2.9
4.2
3.4
4.5
4.5
4.3
4.3
3.8
3.4
4.1
4.0
LOADING...
Click the icon to view the table of bootstrap samples....

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." Using the bootstrap method with
200 bootstrap samples, construct a 90% confidence interval
estimate of mu. How does the result compare to the confidence
interval 3.65 less than mu less than 4.16 constructed using only
the original sample data?
3.8 2.9 3.9 4.8 3.0 4.2 3.5 4.6 4.5 4.3 4.2 3.9 3.2 4.0 3.8
The bootstrap interval is nothing less than mu less than...

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." Using the bootstrap method with
200 bootstrap samples, construct a 90% confidence interval
estimate of mu. How does the result compare to the confidence
interval 3.65less than mu less than 4.16 constructed using only the
original sample data?
3.8 2.9 3.9 4.8 3.0 4.2 3.5 4.6 4.5 4.3 4.2 3.9 3.2 4.0 3.8
Click the icon to view the table of bootstrap samples. The...

Listed in the accompanying data table are student evaluation
ratings of courses and professors, where a rating of 5 is for
"excellent." Assume that each sample is a simple random sample
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a. Use the 93 course evaluations to construct a 98%
confidence interval estimate of the standard deviation of the
population from which the sample was obtained.
b. Repeat part (a) using the 93 professor
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c. Compare the results from part...

Listed below are student evaluation ratings of courses, where a
rating of 5 is for "excellent." The ratings were obtained at one
university in a state. Construct a confidence interval using a
95%
confidence level. What does the confidence interval tell about
the population of all college students in the state?
4.1,2.8, 3.8,4.8,3.2,4.1,3.7,4.4,4.5,4.4,4.1,3.7,
3.2,4.1, 3.6

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