Explanation Given information : Ages of Skeletons Site 0 − 4 years 5 − 19 Years 20 Years or More Casa da Moura 27 61 126 Wandersleben 38 60 118 Concept Involved: In order to decide whether the presumed hypothesis for data sample stands accurate for the entire population or not we use the hypothesis testing. H 0 represents null hypothesis test and H a represents alternative hypothesis test. χ 2 represent value of chi square test statistics found using the formula χ 2 = ∑ ( O − E ) 2 E where O is observed frequency and E is expected frequency. The value of test statistics and the critical value identified from the table help us to decide whether to reject or do not reject null hypothesis. The critical value from Table A.4, using degrees of freedom of contingency table of any given study is provided. If χ 2 ≥ C r i t i c a l V a l u e , then reject H 0 otherwise reject H 0

Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561

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Chapter 12, Problem 10CQ

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To state : the appropriate null and alternate hypotheses

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Elementary Statistics ( 3rd International Edition ) Isbn:9781260092561

Ch. 12.1 - In Exercises 9 and 10, fill in each blank with the...Ch. 12.1 - Prob. 10E Ch. 12.1 - In Exercises 11 and 12, determine whether the...Ch. 12.1 - Prob. 12E Ch. 12.1 - Find the =0.05 critical value for the chi-square...Ch. 12.1 - Find the =0.01 critical value for the chi-square...Ch. 12.1 - Find the area to the right of 24.725 under the...Ch. 12.1 - Find the area to the right of 40.256 under the...Ch. 12.1 - For the following observed and expected...Ch. 12.1 - For the following observed and expected...

Ch. 12.1 - Following are observed frequencies. The null...Ch. 12.1 - Following are observed frequencies. The null...Ch. 12.1 - Is the lottery fair? Mega Millions is a multistate...Ch. 12.1 - Grade distribution: A statistics teacher claims...Ch. 12.1 - False alarm: The numbers of false fire alarms were...Ch. 12.1 - Crime rates: The FBI computed the proportion of...Ch. 12.1 - Prob. 25E Ch. 12.1 - Prob. 26E Ch. 12.1 - Economic future: A Heartland Monitor poll taken in...Ch. 12.1 - Prob. 28E Ch. 12.1 - Fair die? A gambler rolls a die 600 times to...Ch. 12.2 - In Exercises 3-5, fill in each blank with the...Ch. 12.2 - Prob. 4E Ch. 12.2 - Prob. 5E Ch. 12.2 - Prob. 6E Ch. 12.2 - Prob. 7E Ch. 12.2 - In Exercises 6-8, determine whether the statement...Ch. 12.2 - For the given table of observed frequencies:...Ch. 12.2 - For the given table of observed frequencies:...Ch. 12.2 - Carbon monoxide: A recent study examined the...Ch. 12.2 - Beryllium disease: Beryllium is an extremely...Ch. 12.2 - No smoking: The General Social Survey conducted a...Ch. 12.2 - How big is your family? The General Social Survey...Ch. 12.2 - Age discrimination: The following table presents...Ch. 12.2 - Schools and museums: Do people who are interested...Ch. 12.2 - Prob. 17E Ch. 12.2 - Prob. 18E Ch. 12.2 - Prob. 19E Ch. 12.2 - Are you an optimist? The General Social Survey...Ch. 12 - A contingency table containing observed values has...Ch. 12 - Prob. 2CQ Ch. 12 - Prob. 3CQ Ch. 12 - Prob. 4CQ Ch. 12 - Prob. 5CQ Ch. 12 - Prob. 6CQ Ch. 12 - Exercises 4-9 refer to the following data:...Ch. 12 - Prob. 8CQ Ch. 12 - Exercises refer to the following data: Electric...Ch. 12 - Prob. 10CQ Ch. 12 - Exercises 10-15 refer to the following data:...Ch. 12 - Prob. 12CQ Ch. 12 - Prob. 13CQ Ch. 12 - Prob. 14CQ Ch. 12 - Prob. 15CQ Ch. 12 - Prob. 1RE Ch. 12 - Prob. 2RE Ch. 12 - Prob. 3RE Ch. 12 - Prob. 4RE Ch. 12 - Prob. 5RE Ch. 12 - Prob. 6RE Ch. 12 - Prob. 7RE Ch. 12 - Prob. 8RE Ch. 12 - Prob. 9RE Ch. 12 - Prob. 10RE Ch. 12 - Prob. 11RE Ch. 12 - Prob. 12RE Ch. 12 - Prob. 13RE Ch. 12 - Prob. 14RE Ch. 12 - Prob. 15RE Ch. 12 - Prob. 1WAI Ch. 12 - Prob. 2WAI Ch. 12 - Prob. 3WAI Ch. 12 - Prob. 4WAI Ch. 12 - Prob. 1CS Ch. 12 - Prob. 2CS Ch. 12 - Prob. 3CS Ch. 12 - Prob. 4CS Ch. 12 - Prob. 5CS Ch. 12 - Prob. 6CS Ch. 12 - Prob. 7CS Ch. 12 - We conclude that department is associated with...

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Urban Travel Times Population of cities and driving times are related, as shown in the accompanying table, which shows the 1960 population N, in thousands, for several cities, together with the average time T, in minutes, sent by residents driving to work. City Population N Driving time T Los Angeles 6489 16.8 Pittsburgh 1804 12.6 Washington 1808 14.3 Hutchinson 38 6.1 Nashville 347 10.8 Tallahassee 48 7.3 An analysis of these data, along with data from 17 other cities in the United States and Canada, led to a power model of average driving time as a function of population. a Construct a power model of driving time in minutes as a function of population measured in thousands b Is average driving time in Pittsburgh more or less than would be expected from its population? c If you wish to move to a smaller city to reduce your average driving time to work by 25, how much smaller should the city be?

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To state : the appropriate null and alternate hypotheses

Solution Summary: The author states that the null and alternate hypotheses are based on the age distribution of skeletons at each site.

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To state : the appropriate null and alternate hypotheses

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Chapter 12 Solutions