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Get Full Access to Stats Modeling The World - 4 Edition - Chapter 25 - Problem 13
Get Full Access to Stats Modeling The World - 4 Edition - Chapter 25 - Problem 13

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# Hurricane frequencies The National Hurricane Center provides data that list the numbers ISBN: 9780321854018 481

## Solution for problem 13 Chapter 25

Stats Modeling the World | 4th Edition

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Problem 13

Hurricane frequencies The National Hurricane Center provides data that list the numbers of large (category 3, 4, or 5) hurricanes that have struck the United States, by decade since 1851 (www.nhc.noaa.gov/dcmi.shtml). The data are summarized below. Recently, theres been some concern that perhaps the number of large hurricanes has been increasing. The natural null hypothesis would be that the frequency of such hurricanes has remained constant. a) With 96 large hurricanes observed over the 16 periods, what are the expected value(s) for each cell? b) What kind of chi-square test would be appropriate? c) State the null and alternative hypotheses. d) How many degrees of freedom are there? e) The value of x2 is 12.67. Whats the P-value? f) State your conclusion.

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STAT 110: Notes for Week of 9/13/16  Chapter 10 o In order to describe data, you must figure out if it is quantitative or categorical. o Quantitative Variable: a variable that measures something already in numerical form, ex. inches of a piece of paper, weight of a person, IQ, etc. o Categorical Variable: measures something that needs to be put into categories and/or given numerical value, ex. favorite color, ethnicity, current feelings, etc. o Distribution of a variable: tells what values of a variable occur and how often they occur, ex. 20 people like the color blue, 0 people like the color orange, etc.  Distributions can be described through tables, graphs, or num

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##### ISBN: 9780321854018

This textbook survival guide was created for the textbook: Stats Modeling the World, edition: 4. The answer to “Hurricane frequencies The National Hurricane Center provides data that list the numbers of large (category 3, 4, or 5) hurricanes that have struck the United States, by decade since 1851 (www.nhc.noaa.gov/dcmi.shtml). The data are summarized below. Recently, theres been some concern that perhaps the number of large hurricanes has been increasing. The natural null hypothesis would be that the frequency of such hurricanes has remained constant. a) With 96 large hurricanes observed over the 16 periods, what are the expected value(s) for each cell? b) What kind of chi-square test would be appropriate? c) State the null and alternative hypotheses. d) How many degrees of freedom are there? e) The value of x2 is 12.67. Whats the P-value? f) State your conclusion.” is broken down into a number of easy to follow steps, and 122 words. Since the solution to 13 from 25 chapter was answered, more than 230 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 31 chapters, and 1357 solutions. The full step-by-step solution to problem: 13 from chapter: 25 was answered by , our top Statistics solution expert on 03/16/18, 04:57PM. Stats Modeling the World was written by and is associated to the ISBN: 9780321854018.

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