Slides are available at:
https://drive.google.com/drive/folder...
A professor using an open source introductory statistics book predicts that 60% of the students will purchase a hard copy of the book, 25% will print it out from the web, and 15% will read it online. At the end of the semester he asks his students to complete a survey where they indicate what format of the book they used. Of the 126 students, 71 said they bought a hard copy of the book, 30 said they printed it out from the web, and 25 said they read it online.
(a) State the hypotheses for testing if the professor’s predictions were inaccurate.
(b) How many students did the professor expect to buy the book, print the book, and read the book exclusively online?
(c) This is an appropriate setting for a chi-square test. List the conditions required for a test and verify they are satisfied.
(d) Calculate the chi-squared statistic, the degrees of freedom associated with it, and the p-value.
(e) Based on the p-value calculated in part (d), what is the conclusion of the hypothesis test? Interpret your conclusion in this context.
All of our textbooks are free to download:
http://www.openintro.org/books
Example Exercise: 6.41 (OpenIntro Statistics & Advanced High School Statistics) | |
| 1,683 views views | 5,580 followers |
| 7 Likes | 7 Dislikes |
| Education | Upload TimePublished on 26 Nov 2017 |
| proportions worksheet, proportions calculator, proportions math, proportions web, proportions definition, proportions word problems, proportions word problems worksheet, proportions of the face, proportions in triangles, proportions worksheet pdf, proportions and ratios, proportions of the human body, proportions practice, proportions and similar figures, proportions geometry, proportions khan academy, proportions and percents, proportions games, proportions test, proportions problems | |
No comments:
Post a Comment