Homework Help is Here – Start Your Trial Now!
Math
Statistics
up. We are interested in the population proportion of drivers who claim they always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is nor vou must first prove that assumption, though.) O Part (a) (1) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal.

up. We are interested in the population proportion of drivers who claim they always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is nor vou must first prove that assumption, though.) O Part (a) (1) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
A,D,E.only please
Suppose that insurance companies did a survey. They randomly surveyed 440 drivers and found that 330 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) (i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal. n = (iii) Round your answer to four decimal places. p'= (rounded to four decimal places) O Part (b) O Part (c) O Part (d) Construct a 95% confidence interval for the population proportion who claim they always buckle up. (i) State the confidence interval. (Round your answers to four decimal places.) (ii) Sketch the graph. a C.L. %3D P' (ii) Calculate the error bound. (Round your answer to four decimal places.) O Part (e) If this survey were done by telephone, list three difficulties the companies might have in obtaining random results. O Only people over the age of 24 would be included in the survey. O Individuals may choose to participate or not participate in the phone survey. O The individuals in the sample may not accurately reflect the population. O Individuals may not tell the truth about buckling up. O Children who do not answer the phone will not be included.
Transcribed Image Text:Suppose that insurance companies did a survey. They randomly surveyed 440 drivers and found that 330 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) (i) Enter an exact number as an integer, fraction, or decimal. (ii) Enter an exact number as an integer, fraction, or decimal. n = (iii) Round your answer to four decimal places. p'= (rounded to four decimal places) O Part (b) O Part (c) O Part (d) Construct a 95% confidence interval for the population proportion who claim they always buckle up. (i) State the confidence interval. (Round your answers to four decimal places.) (ii) Sketch the graph. a C.L. %3D P' (ii) Calculate the error bound. (Round your answer to four decimal places.) O Part (e) If this survey were done by telephone, list three difficulties the companies might have in obtaining random results. O Only people over the age of 24 would be included in the survey. O Individuals may choose to participate or not participate in the phone survey. O The individuals in the sample may not accurately reflect the population. O Individuals may not tell the truth about buckling up. O Children who do not answer the phone will not be included.
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS