The speed of pickup of ride sharing services like Uber and Lyft seems to have surpassed that of ambulance services. The mean response time of ambulances across the United States is 15.3 minutes with a standard deviation of 12.8 minutes. For ride sharing services, the mean pick-up time across the United States is 8 minutes with a standard deviation of 5.2 minutes. Based on these estimates, which of the following gives the standard deviation of the sampling distribution of the difference in the sample means for samples of 30 ambulance rides and 40 ride sharing rides (Ambulance – Ride Sharing)? (A) \frac{12.8}{\sqrt{30}}+\frac{5.2}{\sqrt{40}}3012.8+405.2 (B) \frac{12.8}{\sqrt{30}}-\frac{5.2}{\sqrt{40}}3012.8−405.2 (C) \sqrt{\frac{12.8^2}{30}+\frac{5.2^2}{40}}3012.82+405.22 (D) \sqrt{\frac{12.8^2}{30}-\frac{5.2^2}{40}}3012.82−405.22 (E) Cannot be determined because the conditions are not met.
The speed of pickup of ride sharing services like Uber and Lyft seems to have surpassed that of ambulance services. The mean response time of ambulances across the United States is 15.3 minutes with a standard deviation of 12.8 minutes. For ride sharing services, the mean pick-up time across the United States is 8 minutes with a standard deviation of 5.2 minutes. Based on these estimates, which of the following gives the standard deviation of the sampling distribution of the difference in the sample means for samples of 30 ambulance rides and 40 ride sharing rides (Ambulance – Ride Sharing)? (A) \frac{12.8}{\sqrt{30}}+\frac{5.2}{\sqrt{40}}3012.8+405.2 (B) \frac{12.8}{\sqrt{30}}-\frac{5.2}{\sqrt{40}}3012.8−405.2 (C) \sqrt{\frac{12.8^2}{30}+\frac{5.2^2}{40}}3012.82+405.22 (D) \sqrt{\frac{12.8^2}{30}-\frac{5.2^2}{40}}3012.82−405.22 (E) Cannot be determined because the conditions are not met.
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
The speed of pickup of ride sharing services like Uber and Lyft seems to have surpassed that of ambulance services. The
- (A) \frac{12.8}{\sqrt{30}}+\frac{5.2}{\sqrt{40}}3012.8+405.2
- (B) \frac{12.8}{\sqrt{30}}-\frac{5.2}{\sqrt{40}}3012.8−405.2
- (C) \sqrt{\frac{12.8^2}{30}+\frac{5.2^2}{40}}3012.82+405.22
- (D) \sqrt{\frac{12.8^2}{30}-\frac{5.2^2}{40}}3012.82−405.22
- (E) Cannot be determined because the conditions are not met.
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 2 steps with 1 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.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