spreadFowler and Christakis (2008) report that personalhappiness tends to be associated with having a socialnetwork including many other happy friends., To testthis claim, a researcher obtains a sample ofn 16adults who claim to be happy people and a similarsample of n 16 adults who describe themselvesas neutral or unhappy. Each individual is then askedo identify the number of their close friends whomhey consider to be happy people. The scores areas follows:8 7 4 106 6 8 9 887 5 6 9 8 9Unhappy: 5 8 4 6 67 9 6 2 85 6 4 756Нарру:ketch a polygon showing the frequency distribu-on for the happy people. In the same graph, sketchpolygon for the unhappy people. (Use two differ-at colors, or use a solid line for one polygon and aashed line for the other.) Does one group seem toave more happy friends?

Answered: spread Fowler and Christakis (2008)…

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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A warehouse manager wants to know if there is an association between the shift worked and being on time for work. To investigate, he selects a random sample of 70 workers and classifies each one according to the shift they worked most recently and whether they were on time for work. He was unable to classify a substantial number of people as being on time, so he classified those individuals as unknown. The data are displayed in the table. The manager would like to know if these data provide convincing evidence of an association between the shift worked and being on time in the large population of all workers at this warehouse. The random and 10% conditions are met. Is the Large Counts condition met? Yes, the smallest expected count is 5, so all expected counts are at least 5. Yes, the smallest expected count is 8.54, so all expected counts are at least 5. No, the smallest expected count is 2.56, so the expected counts are not all at least 5. No, the smallest expected count is…
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