A study is being conducted on the effects of screen time on elementary-age children reading abilities ages 7 to 12. Researchers asked a random sample of 44 parents in a local school district whether or not children have daily access to a tablet or smartphone at home and then tested their children for how many words per minute they could read. A data set with the following variables resulted from the study: Variable A: Yes or No response to the question about access to a tablet Variable B: The number of words per minute the child could read 1. Which symbol represents { ,,, } the point estimate they would find from variable A. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x- bar). 2. Which symbol represents { ,,, } the point estimate they would find from variable B. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x- bar). 3. The researcher found that 29 children in the sample of 44 children had daily access to a tablet or smartphone. Calculate and interpret the following: a) the point estimate b) The critical value needed for a 95% confidence interval. c) the margin of error used to construct a 95% confidence interval (show work or screenshots). 4. If researchers wanted a smaller margin of error, what could they change about their study?
A study is being conducted on the effects of screen time on elementary-age children reading abilities ages 7 to 12. Researchers asked a random sample of 44 parents in a local school district whether or not children have daily access to a tablet or smartphone at home and then tested their children for how many words per minute they could read. A data set with the following variables resulted from the study: Variable A: Yes or No response to the question about access to a tablet Variable B: The number of words per minute the child could read 1. Which symbol represents { ,,, } the point estimate they would find from variable A. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x- bar). 2. Which symbol represents { ,,, } the point estimate they would find from variable B. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x- bar). 3. The researcher found that 29 children in the sample of 44 children had daily access to a tablet or smartphone. Calculate and interpret the following: a) the point estimate b) The critical value needed for a 95% confidence interval. c) the margin of error used to construct a 95% confidence interval (show work or screenshots). 4. If researchers wanted a smaller margin of error, what could they change about their study?
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
Can you please answer the questions in the picture please, explain every answer! Thank you!
Transcribed Image Text:A study is being conducted on the effects of screen time on elementary-age children reading abilities ages 7 to 12. Researchers asked a random sample of
44 parents in a local school district whether or not children have daily access to a tablet or smartphone at home and then tested their children for how
many words per minute they could read. A data set with the following variables resulted from the study:
Variable A: Yes or No response to the question about access to a tablet
Variable B: The number of words per minute the child could read
1. Which symbol represents {
,,, } the point estimate they would find from variable A. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x-
bar).
2. Which symbol represents {
} the point estimate they would find from variable B. Explain why you picked what you picked (if you can't type the symbols it is ok to type p-hat, mu, x-
bar).
3. The researcher found that 29 children in the sample of 44 children had daily access to a tablet or smartphone. Calculate and interpret the following:
a) the point estimate
b) The critical value needed for a 95% confidence interval.
c) the margin of error used to construct a 95% confidence interval (show work or screenshots).
4. If researchers wanted a smaller margin of error, what could they change about their study?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
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