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story. Are some kinds of injuries more lethal than others? Complete p a Click the icon to view the table. D. Ho: Site of injury and whether or not it was lethal are not inde HA: Site of injury and whether or not it was lethal are indepen

story. Are some kinds of injuries more lethal than others? Complete p a Click the icon to view the table. D. Ho: Site of injury and whether or not it was lethal are not inde HA: Site of injury and whether or not it was lethal are indepen

MATLAB: An Introduction with Applications
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 certain story, describing several weeks of a long war, includes many details of injuries and outcomes. The accompanying table summarizes 147 recorded injuries for which both injury site and outcome are provided in the story. Are some kinds of injuries more lethal than others? Complete parts a through e below. Click the icon to view the table. O D. Ho: Site of injury and whether or not it was lethal are not inde HA: Site of injury and whether or not it was lethal are indepen Table of injuries Find the expected values under the null hypothesis. Lethal? Lethal? Fatal Not fatal Total Fatal Not fatal Body 59 8 67 Body 52.87 14.13 Injury Site Head/neck 47 3 50 Injury Site Head/neck 39.46 10.54 Limb 10 20 30 Total 116 31 147 Limb 23.67 6.32 (Round to two decimal places as needed.) b) Compute the x statistic. Done (Round to two decimal places as needed.) c) How many degrees of freedom does the x statistic have?
Transcribed Image Text:A certain story, describing several weeks of a long war, includes many details of injuries and outcomes. The accompanying table summarizes 147 recorded injuries for which both injury site and outcome are provided in the story. Are some kinds of injuries more lethal than others? Complete parts a through e below. Click the icon to view the table. O D. Ho: Site of injury and whether or not it was lethal are not inde HA: Site of injury and whether or not it was lethal are indepen Table of injuries Find the expected values under the null hypothesis. Lethal? Lethal? Fatal Not fatal Total Fatal Not fatal Body 59 8 67 Body 52.87 14.13 Injury Site Head/neck 47 3 50 Injury Site Head/neck 39.46 10.54 Limb 10 20 30 Total 116 31 147 Limb 23.67 6.32 (Round to two decimal places as needed.) b) Compute the x statistic. Done (Round to two decimal places as needed.) c) How many degrees of freedom does the x statistic have?
c) How many degrees of freedom does the x statistic have? 2 (Type a whole number.) d) Find the P-value. P-value = 0.000 (Round to three decimal places as needed.) e) What should be concluded? Reject the null hypothesis for a = 0.05 and conclude that site of injury and whether or not it was lethal are not independent.
Transcribed Image Text:c) How many degrees of freedom does the x statistic have? 2 (Type a whole number.) d) Find the P-value. P-value = 0.000 (Round to three decimal places as needed.) e) What should be concluded? Reject the null hypothesis for a = 0.05 and conclude that site of injury and whether or not it was lethal are not independent.
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