subject
Mathematics, 22.04.2020 03:17 dudedude1593

Open source textbook. 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.

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 15:40
Evaluate the following expression 1/3^2
Answers: 1
question
Mathematics, 21.06.2019 21:30
Zack notices that segment nm and segment pq are congruent in the image below: which step could him determine if δnmo ≅δpqr by sas? (5 points) segment mo ≅ segment qr segment on ≅ segment qp ∠ n ≅ ∠ r ∠ o ≅ ∠ q
Answers: 3
question
Mathematics, 21.06.2019 23:30
Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis
Answers: 2
question
Mathematics, 22.06.2019 00:30
Asalsa recipe uses green pepper, onion, and tomato in the extended ratio 3: 5: 7. how many cups of tomato are needed to make 105 cups of salsa? a. 7 b. 21 c. 35 d. 49
Answers: 3
You know the right answer?
Open source textbook. A professor using an open source introductory statistics book predicts that 60...
Questions
question
Mathematics, 23.06.2021 06:00
question
Mathematics, 23.06.2021 06:00
question
Chemistry, 23.06.2021 06:00