# Ain Grades ractice: Problem 3 Problem Value: 1 points). Problem Score: 45%. Attempts Remaining: Unlimited. (1...

###### Question:

ain Grades ractice: Problem 3 Problem Value: 1 points). Problem Score: 45%. Attempts Remaining: Unlimited. (1 point) A professor using an open source introductory statistics book predicts that 15% ofthe students will purchase a hard copy of the book, 55% will print it out from the web, and 30% will read t 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 254 students, 24 sa d they bought a hard copy of the book, 149 said they printed it out from the web, and 81 said they read it onine. Round a l answers to four decimal places. 1. State the hypotheses for testing if the professor s predictions were inaccurate. Ho: The professor's predictions were HA: The professor's predictions were not accurate. The difference s not 2. Enter the expected values for the hypothesis test in the table below accurate. The difference is due to chance. due to chance. Book Format Expected Value Hard copy Print from web Read online 3. Calculate the chi-squared statistic: 4. Calculate the degrees of freedom: 5. Calculate the p-value: 6. Based on the p-value calculated in part 5 and using α-0. 10, what is the conclusion of the hypothesis test? A. Do not reject Ho B. Reject Ho Help Entering Answers Preview My Answers Submit Answers

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