Homework Help is Here – Start Your Trial Now!
Math
Statistics
6. A new type of speed trap cameras is being evaluated to be used for detecting speeding vehicles. The current type of cameras has the probability of p = 0.8 of a successful 3 detection. From a sample of 40 detections using the new cameras, 34 are found successful. a) For this sample, find the standard error of the proportion. b) Establish a 95% confidence interval for p. c) Can we conclude that the new type of cameras is better? Justify your answer.

6. A new type of speed trap cameras is being evaluated to be used for detecting speeding vehicles. The current type of cameras has the probability of p = 0.8 of a successful 3 detection. From a sample of 40 detections using the new cameras, 34 are found successful. a) For this sample, find the standard error of the proportion. b) Establish a 95% confidence interval for p. c) Can we conclude that the new type of cameras is better? Justify your answer.

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

chapter: ESTIMATION

6. A new type of speed trap cameras is being evaluated to be used for detecting speeding vehicles. The current type of cameras has the probability of p = 0.8 of a successful 3 detection. From a sample of 40 detections using the new cameras, 34 are found successful. a) For this sample, find the standard error of the proportion. b) Establish a 95% confidence interval for p. c) Can we conclude that the new type of cameras is better? Justify your answer. 7. Ten faculties of engineering at different universities were surveyed. The sample contained 250 electrical engineering students, 80 being females and from 175 civil engineering students, 40 being females. Compute a 90% confidence interval for the difference between the proportions of female students in these two fields of engineering. Is there a significant difference between the two proportions?
Transcribed Image Text:6. A new type of speed trap cameras is being evaluated to be used for detecting speeding vehicles. The current type of cameras has the probability of p = 0.8 of a successful 3 detection. From a sample of 40 detections using the new cameras, 34 are found successful. a) For this sample, find the standard error of the proportion. b) Establish a 95% confidence interval for p. c) Can we conclude that the new type of cameras is better? Justify your answer. 7. Ten faculties of engineering at different universities were surveyed. The sample contained 250 electrical engineering students, 80 being females and from 175 civil engineering students, 40 being females. Compute a 90% confidence interval for the difference between the proportions of female students in these two fields of engineering. Is there a significant difference between the two proportions?
Expert Solution
steps

Step by step

Solved in 5 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