Homework Help is Here – Start Your Trial Now!
Math
Statistics
1) In an effort to estimate the mean amount spent per customer at Oliver's Eatery in Astoria, Queens, data were collected from a sample of 49 customers. If it is known that the overall standard deviation is $5 since the restaurant opened in 2011 construct a 95 % confidence level if you find that the average for this sample is $24.80

1) In an effort to estimate the mean amount spent per customer at Oliver's Eatery in Astoria, Queens, data were collected from a sample of 49 customers. If it is known that the overall standard deviation is $5 since the restaurant opened in 2011 construct a 95 % confidence level if you find that the average for this sample is $24.80

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
CONFIDENCE LEVEL PROBLEMS 1) In an effort to estimate the mean amount spent per customer at Oliver's Eatery in Astoria, Queens, data were collected from a sample of 49 customers. If it is known that the overall standard deviation is $5 since the restaurant opened in 2011 construct a 95 % confidence level if you find that the average for this sample is $24.80 2) The average undergraduate GPA for those students admitted to Graduate Business Schools was 3.37, according to US News and World Report in 2017. In Fall of 2018, 120 students were admitted to the top schools. From years past we know that the standard deviation is 0.28. Construct a 90 % confidence interval for students admitted to the top Graduate Business Schools. 3) Sales personnel for the Skillings Distributors mu the number of customer contacts made. A sample of 40 weekly reports showed a submit weekly reports which list mean of 19.5 customer contacts per week with a standard deviation of 5.2. Construct a 90 % confidence interval for the sales personnel. Construct a 95 % confidence interval for the sales personnel. 4) A survey of 10 restaurants which was done in early 2019 in the Miami Dade Area by the Bartlett Organisation showed a sample mean customer satisfaction index of 71 with a standard deviation of 5. Construct a 95 % confidence interval for the satisfaction index. Construct a 99 % confidence interval for the satisfaction index. 5) The commuting time for residents of the largest cities in the US has a standard deviation of 6.25 minutes. If we want a margin of error of 2 minutes and a 95 % confidence level, how many cities should we choose for the sample? O Focus
Transcribed Image Text:CONFIDENCE LEVEL PROBLEMS 1) In an effort to estimate the mean amount spent per customer at Oliver's Eatery in Astoria, Queens, data were collected from a sample of 49 customers. If it is known that the overall standard deviation is $5 since the restaurant opened in 2011 construct a 95 % confidence level if you find that the average for this sample is $24.80 2) The average undergraduate GPA for those students admitted to Graduate Business Schools was 3.37, according to US News and World Report in 2017. In Fall of 2018, 120 students were admitted to the top schools. From years past we know that the standard deviation is 0.28. Construct a 90 % confidence interval for students admitted to the top Graduate Business Schools. 3) Sales personnel for the Skillings Distributors mu the number of customer contacts made. A sample of 40 weekly reports showed a submit weekly reports which list mean of 19.5 customer contacts per week with a standard deviation of 5.2. Construct a 90 % confidence interval for the sales personnel. Construct a 95 % confidence interval for the sales personnel. 4) A survey of 10 restaurants which was done in early 2019 in the Miami Dade Area by the Bartlett Organisation showed a sample mean customer satisfaction index of 71 with a standard deviation of 5. Construct a 95 % confidence interval for the satisfaction index. Construct a 99 % confidence interval for the satisfaction index. 5) The commuting time for residents of the largest cities in the US has a standard deviation of 6.25 minutes. If we want a margin of error of 2 minutes and a 95 % confidence level, how many cities should we choose for the sample? O Focus
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
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
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