Q57. A bookstore in your city claims tht fiction books have more sales in the second half of the year than in the first half. Average monthly sales for a sample of fiction books sold at bookstores throughout the city over a period of oneyear provides the following data for gross earnings (in dollars) during the two halves of the year. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 305; mean = 38832; sd = 1259; min = 22343; max = 53347 Q58. Book sales, part 2. Here is some additional information about the fiction books' sales data presented in exercise 57. It is generally thought that sales spike during the year-end holidays. So the sales during year-end holidays were omitted, and the new summary statitics was determined as given below. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 248; mean = 21861; sd = 1083; min = 19972; max = 25396 Do sales appear to be higher during the second half of the year after omitting those data most influenced by year-end holidays? a) write the null and alternative hypothesis. b) test the null hypotehsis, and state your conclusion. c) Suggest additional factors that may influence fiction book's sales not accounted for in this exercise.
Q57. A bookstore in your city claims tht fiction books have more sales in the second half of the year than in the first half. Average monthly sales for a sample of fiction books sold at bookstores throughout the city over a period of oneyear provides the following data for gross earnings (in dollars) during the two halves of the year. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 305; mean = 38832; sd = 1259; min = 22343; max = 53347 Q58. Book sales, part 2. Here is some additional information about the fiction books' sales data presented in exercise 57. It is generally thought that sales spike during the year-end holidays. So the sales during year-end holidays were omitted, and the new summary statitics was determined as given below. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 248; mean = 21861; sd = 1083; min = 19972; max = 25396 Do sales appear to be higher during the second half of the year after omitting those data most influenced by year-end holidays? a) write the null and alternative hypothesis. b) test the null hypotehsis, and state your conclusion. c) Suggest additional factors that may influence fiction book's sales not accounted for in this exercise.
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
Pppppvvvv
Transcribed Image Text:Q57. A bookstore in your city claims tht fiction books have more sales in the second half of the year than in the first half. Average monthly sales for a
sample of fiction books sold at bookstores throughout the city over a period of oneyear provides the following data for gross earnings (in dollars) during
the two halves of the year. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 305; mean = 38832; sd
= 1259; min = 22343; max = 53347 Q58. Book sales, part 2. Here is some additional information about the fiction books' sales data presented in exercise
57. It is generally thought that sales spike during the year-end holidays. So the sales during year-end holidays were omitted, and the new summary
statitics was determined as given below. Year: first half n = 194; mean = 17947; sd = 2047; min = 10931; max = 23454 year: second half n = 248; mean
= 21861; sd = 1083; min = 19972; max = 25396 Do sales appear to be higher during the second half of the year after omitting those data most
influenced by year-end holidays? a) write the null and alternative hypothesis. b) test the null hypotehsis, and state your conclusion. c) Suggest additional
factors that may influence fiction book's sales not accounted for in this exercise.
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 2 steps
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