Helen wants to compare two machines in her factory to see if the wrapping was satisfactory. She wants to know if there is a difference between the two machines. She randomly chooses 56 packs that were wrapped with machine A and finds among them 47 that were satisfactory. She also randomly chooses 25 packs that were wrapped by machine B and notices that 14 of them were satisfactory. Use this information for both parts.
Helen wants to compare two machines in her factory to see if the wrapping was satisfactory. She wants to know if there is a difference between the two machines. She randomly chooses 56 packs that were wrapped with machine A and finds among them 47 that were satisfactory. She also randomly chooses 25 packs that were wrapped by machine B and notices that 14 of them were satisfactory. Use this information for both parts.
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 41SE: A cell phone company offers 6 different voice packages and 8 different data packages. Of those, 3...
Related questions
Question
Transcribed Image Text:Part 1: What is the null and alternative hypothesis for his test?
O Ho : PA = PB; H : PA < PB
O Ho : PA = PB; H. : PA # PB
O Ho : PA> PB; H: PA= PB
O Ho PA # PB; Ha: PA= PB
O Họ : µA =µB; Ha: HA # HB
Part 2: Are the requirements for the hypothesis test met?
O Yes, the total sample size is 81 which is greater than 30.
O Yes. np > 10 and n(1- p) 2 10 is true for both samples.
O No, there are only 25 in the second group which is not larger than 30.
O No. np 10 and n(1 - p) > 10 is NOT true for at least one of the samples.
O No we need to do a histogram for the second group.
Transcribed Image Text:Helen wants to compare two machines in her factory to see if the wrapping was satisfactory. She
wants to know if there is a difference between the two machines. She randomly chooses 56 packs that
were wrapped with machine A and finds among them 47 that were satisfactory. She also randomly
chooses 25 packs that were wrapped by machine B and notices that 14 of them were satisfactory. Use
this information for both parts.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images
Recommended textbooks for you
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:
9781305071742
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
College Algebra
Algebra
ISBN:
9781305115545
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Algebra and Trigonometry (MindTap Course List)
Algebra
ISBN:
9781305071742
Author:
James Stewart, Lothar Redlin, Saleem Watson
Publisher:
Cengage Learning
Elementary Geometry For College Students, 7e
Geometry
ISBN:
9781337614085
Author:
Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:
Cengage,
Algebra: Structure And Method, Book 1
Algebra
ISBN:
9780395977224
Author:
Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:
McDougal Littell