Exercises 61 to 64 refer to the following setting. For their final project, a group of AP Statistics students investigated the following question: "Will changing the rating scale on a survey affect how respondents answer the question?" To find out, the group took an SRS of 90 students from an alphabetical roster of the school's just over 1000 students. The first 45 students chosen were asked to rate the cafeteria food on a scale of 1 (terrible) to 5 (excellent). The remain- ing 45 students were asked to rate the cafeteria food on a scale of 0 (terrible) to 4 (excellent). Here are the data: 1 to 5 scale 1 2 3 4 5 2 3 1 13 3 Rating Frequency O to 4 scale Rating Frequency 0 1 2 3 4 0 0 2 18 8 62. Sorry, no chi-square (11.1) Explain why it would not be appropriate to perform a chi-square goodness-of fit test in this setting

Exercises 61 to 64 refer to the following setting. For their final project, a group of AP Statistics students investigated the following question: "Will changing the rating scale on a survey affect how respondents answer the question?" To find out, the group took an SRS of 90 students from an alphabetical roster of the school's just over 1000 students. The first 45 students chosen were asked to rate the cafeteria food on a scale of 1 (terrible) to 5 (excellent). The remain- ing 45 students were asked to rate the cafeteria food on a scale of 0 (terrible) to 4 (excellent). Here are the data: 1 to 5 scale 1 2 3 4 5 2 3 1 13 3 Rating Frequency O to 4 scale Rating Frequency 0 1 2 3 4 0 0 2 18 8 62. Sorry, no chi-square (11.1) Explain why it would not be appropriate to perform a chi-square goodness-of fit test in this setting

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Twenty-nine college students, identified as having a positive attitude about Mitt Romney as compared to Barack Obama in the 2012 presidential election, were asked to rate how trustworthy the face of Mitt Romney appeared, as represented in their mental image of Mitt Romney’s face. Ratings were on a scale of 0 to 7, with 0 being “not at all trustworthy” and 7 being “extremely trustworthy.” Here are the 29 ratings: 2.6 3.2 3.7 3.3 3.4 3.6 3.7 3.8 3.9 4.1 4.2 4.9 5.7 4.2 3.9 3.2 4.5 5.0 5.0 4.6 4.6 3.9 3.9 5.3 2.8 2.6 3.0 3.3 3.7 a 95% confidence interval for the mean rating. Is there significant evidence at the 5% level that the mean rating is greater than 3.5 (a neutral rating)?
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Hospitals In a study of births in New York State, data were collected from four hospitals coded as follows: (1) Albany Medical Center; (1438) Bellevue Hospital Center; (66) Olean General Hospital; (413) Strong Memorial Hospital. Does it make sense to calculate the average (mean) of the numbers 1, 1438, 66, and 413?