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Which of the following is NOT CORRECT?

Which of the following is NOT CORRECT?

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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The next set of questions refers to the following situation: A study was conducted to determine if the fatality rate depends on the size of the automobile. The analysis of accidents is as follows (with some values hidden): DEATH FREQUENCY | no yes TOTAL m 1 63 1 26 | 89 SIZE S 128 95 I 223 CHI-SQUARE LIKELIHOOD RATIO CHI-SQUARE I 46 I 16 I 62 STATISTICS FOR TABLE OF DEATH BY SIZE STATISTIC DF TOTAL 237 137 374 VALUE 8.663 8.838 PROB ***** *****
Transcribed Image Text:The next set of questions refers to the following situation: A study was conducted to determine if the fatality rate depends on the size of the automobile. The analysis of accidents is as follows (with some values hidden): DEATH FREQUENCY | no yes TOTAL m 1 63 1 26 | 89 SIZE S 128 95 I 223 CHI-SQUARE LIKELIHOOD RATIO CHI-SQUARE I 46 I 16 I 62 STATISTICS FOR TABLE OF DEATH BY SIZE STATISTIC DF TOTAL 237 137 374 VALUE 8.663 8.838 PROB ***** *****
Which of the following is NOT CORRECT? (a) The accidents were cross classified by size of automobile and fatality status. Each accident was counted in one and only one cell. (b) The null hypothesis is that the fatality status is independent of the size of the automobile. (c) The alternative hypothesis is that there is no association between fatality status and size of automobile. (d) If all expected cell counts are greater than five, then the distribution of the test statistic is an approximate chi-square distribution. (e) If we reject the null hypothesis then we have proven that the size of the automobile affects the chances of a fatality.
Transcribed Image Text:Which of the following is NOT CORRECT? (a) The accidents were cross classified by size of automobile and fatality status. Each accident was counted in one and only one cell. (b) The null hypothesis is that the fatality status is independent of the size of the automobile. (c) The alternative hypothesis is that there is no association between fatality status and size of automobile. (d) If all expected cell counts are greater than five, then the distribution of the test statistic is an approximate chi-square distribution. (e) If we reject the null hypothesis then we have proven that the size of the automobile affects the chances of a fatality.
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