You are a wellness advocate interested in the amount of sleep students are getting. In particular, you want to estimate the population mean of all the numbers of hours slept by college students the night before finals. To estimate this population mean, you select a random sample of 19 college students and record the number of hours each student slept the night before finals. Assume that the population is approximately normally distributed. Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of all the numbers of hours slept by college students the night before finals. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. Take Sample Sample size: Point estimate: Number of students Sample standard deviation: 19 Sample mean Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 95% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Standard error: 6.556 Margin of error: Sample standard X deviation 2.018
You are a wellness advocate interested in the amount of sleep students are getting. In particular, you want to estimate the population mean of all the numbers of hours slept by college students the night before finals. To estimate this population mean, you select a random sample of 19 college students and record the number of hours each student slept the night before finals. Assume that the population is approximately normally distributed. Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of all the numbers of hours slept by college students the night before finals. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results for your random sample. Take Sample Sample size: Point estimate: Number of students Sample standard deviation: 19 Sample mean Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 95% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Standard error: 6.556 Margin of error: Sample standard X deviation 2.018
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:You are a wellness advocate interested in the amount of sleep students are getting. In particular, you want to estimate the population mean of all the numbers
of hours slept by college students the night before finals. To estimate this population mean, you select a random sample of 19 college students and record the
number of hours each student slept the night before finals. Assume that the population is approximately normally distributed.
Based on your sample, follow the steps below to construct a 95% confidence interval for the population mean of all the numbers of hours slept by college
students the night before finals. (If necessary, consult a list of formulas.)
(a) Click on "Take Sample" to see the results for your random sample.
Take Sample
Sample size:
0
Point estimate:
0
Number of students
Sample standard deviation:
19
Sample mean
Enter the values of the sample size, the point estimate of the mean, the sample standard deviation, and the critical value you need for your 95%
confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute".
Standard error:
6.556
Margin of error:
Sample standard
X
deviation
2.018
Ś
Transcribed Image Text:(b)
Sample standard deviation:
П
Critical value:
Compute
0.000
0.000
2.000
Margin of error:
95% confidence interval:
Based on your sample, enter the lower and upper limits to graph the 95% confidence interval for the population mean of all the numbers of hours
slept by college students the night before finals.
95% confidence interval:
4.000
Confidence
level
99%
95%
90%
6.000
8.000
Critical value
X
0.005 2.878
0.025 2.101
0.050 1.734
10.000
10.000
S
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