Answered: Winter Spring Summer Fall 2017 0 4 12 0…

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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	Winter	Spring	Summer	Fall
2017	0	4	12	0
2016	2	9	28	1
2015	0	17	11	0
2014	0	8	17	1
2013	0	8	15	0
2012	1	5	22	1
2011	0	6	19	1
2010	0	11	17	1
2009	1	15	18	1
2008	2	12	15	0

Based on these data, should RainorShine.com warn its audience of seasonal differences in the numbers fatal lightning strikes in the United States? Use a level of significance of ? = 0.05. (You may need to use the appropriate appendix table or technology to answer this question.)

State the hypotheses.

H₀:The median for lightning fatalities for each of the seasons are equal.

H_a:The median for lightning fatalities for each of the seasons are not all equal.

H₀:The populations for lightning fatalities of the four seasons are identical.

H_a:The populations for lightning fatalities of the four seasons are not identical.

H₀:The median for lightning fatalities for each of the seasons are not all equal.

H_a:The median for lightning fatalities for each of the seasons are equal.

H₀:The populations for lightning fatalities of the four seasons are not identical.

H_a:The populations for lightning fatalities of the four seasons are identical.

Rank the data. (Round your answers to one decimal place.)

Year	Winter	Spring	Summer	Fall
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
Totals

Find the value of the test statistic. (Round your answer to two decimal places.)

Find the p-value. (Round your answer to three decimal places.)

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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