For number 6-9: In a recent study of 35 Grade 3 pupils, the mean number of hours per week that they played video games was 16.6. The standard deviation of the population was 2.8. 6. Which of these is the point estimator? A. 2.8 C. 35 D. 40 В. 16.6 7. Determine the standard error A. 0.47 C. 16.6 В. 2.8 D. 35 8. Find the values of the z-score at 95% confidence level for the estimated interval of the population mean. C. ±2.54 D +3.96 A. ±1.64
For number 6-9: In a recent study of 35 Grade 3 pupils, the mean number of hours per week that they played video games was 16.6. The standard deviation of the population was 2.8. 6. Which of these is the point estimator? A. 2.8 C. 35 D. 40 В. 16.6 7. Determine the standard error A. 0.47 C. 16.6 В. 2.8 D. 35 8. Find the values of the z-score at 95% confidence level for the estimated interval of the population mean. C. ±2.54 D +3.96 A. ±1.64
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Nii 6 7 8
Transcribed Image Text:A farmer wishes to estimate the average height of mango trees in his farm. He wants to
be 99% confident that the estimate is accurate within 2 feet. How many samples shoua
he takeif he knew that the standard deviation of heights measured was 4.38 leet?
stimator.
n can be
A. at most 31
C. at most 32
D. at least 32
B. at least 31
5. What is the margin of error for the estimation of proportion given that p=0.7, n=
400 and confidence level of 0.90?
degrees
end the
A. 0.0358
C. 0.0478
D. 0.0449
B. 0.0376
mean
For number 6-9: In a recent study of 35 Grade 3 pupils, the mean number of hours per week that
they played video games was 16.6. The standard deviation of the population was 2.8.
tion
6.
Which of these is the point estimator?
A. 2.8
C. 35
D. 40
5
nterval.
В. 16.6
7. Determine the standard error
A. 0.47
С. 16.6
В. 2.8
D. 35
punces.
ces. In
8.
Find the values of the z-score at 95% confidence level for the estimated interval of the
population mean.
C. ±2.54
A. ±1.64
D. ±3.96
B. ±1.96
= 24.5,
9. Determine the confidence interval of the mean time in playing video games.
A. 15.4<p< 17.8
B. 15.7 <p< 17.5
C. 17.4<p<19.8
D. 7.4 <µ< 17.8
A recent survey of 8 social networking has a mean of 13.1 million visitors for a specific
10.
month with the standard deviation was 4.l million. Construct a 95% confidence
te the
Interval of the true mean.
A. 7.70<p<14.5
B. 9.70 <p< 16.5
C. 6.4<p<16.4
D. 5.4 <p< 17.8
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman