Homework Help is Here – Start Your Trial Now!
Math
Statistics
DDonuts claims that the waiting time of customers for service is normally distributed with a mean of three minutes and a standard deviation of one minute. The quality assurance department found in a sample of 50 customers that the mean waiting time is 2.85 minutes. At a 0.05 level of significance, can we conclude that the mean waiting time is less than three minutes? 1. 2. 3. 4. 5. Problem Definition of u Null hypothesis, Ho Alternative hypothesis, Ha Level of significance Test statistics Critical region, Critical value & Decision rule 6. Computed value 7. Decision 8. Conclusion HO:μ = 3 Ha: μ<3 Level of significance = 0.05

DDonuts claims that the waiting time of customers for service is normally distributed with a mean of three minutes and a standard deviation of one minute. The quality assurance department found in a sample of 50 customers that the mean waiting time is 2.85 minutes. At a 0.05 level of significance, can we conclude that the mean waiting time is less than three minutes? 1. 2. 3. 4. 5. Problem Definition of u Null hypothesis, Ho Alternative hypothesis, Ha Level of significance Test statistics Critical region, Critical value & Decision rule 6. Computed value 7. Decision 8. Conclusion HO:μ = 3 Ha: μ<3 Level of significance = 0.05

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
See similar textbooks
icon
Related questions
Question

Perform a statistical analysis/test of hypothesis, showing all the steps in hypothesis testing. 

 

DDonuts claims that the waiting time of customers for service is normally distributed with a mean of three minutes and a standard deviation of one minute. The quality assurance department found in a sample of 50 customers that the mean waiting time is 2.85 minutes. At a 0.05 level of significance, can we conclude that the mean waiting time is less than three minutes? 1. 2. N 3. 4. 5. 6. 7. 8. Problem Definition of u Null hypothesis, Ho Alternative hypothesis, Ha Level of significance Test statistics Critical region, Critical value & Decision rule Computed value Decision Conclusion HO: μ = 3 Ha: μ<3 Level of significance = 0.05
Transcribed Image Text:DDonuts claims that the waiting time of customers for service is normally distributed with a mean of three minutes and a standard deviation of one minute. The quality assurance department found in a sample of 50 customers that the mean waiting time is 2.85 minutes. At a 0.05 level of significance, can we conclude that the mean waiting time is less than three minutes? 1. 2. N 3. 4. 5. 6. 7. 8. Problem Definition of u Null hypothesis, Ho Alternative hypothesis, Ha Level of significance Test statistics Critical region, Critical value & Decision rule Computed value Decision Conclusion HO: μ = 3 Ha: μ<3 Level of significance = 0.05
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
SEE MORE TEXTBOOKS