Exam Practice Ch 11 Econ 2030 online

# A population where each element of the population is

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6.A population where each element of the population is assigned to one and only one of several classes or categories is a a.multinomial population b.Poisson population c.normal population d.None of these alternatives is correct. 7.An important application of the chi-square distribution is 8.The number of degrees of freedom for the appropriate chi-square distribution in a test of independence is 9.In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be 10.The degrees of freedom for a contingency table with 12 rows and 12 columns is a.144 b.121 c.12 d.120 11.The degrees of freedom for a contingency table with 6 rows and 3 columns is

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CH11 ECON 2030 online 3 Exhibit 11-2 An insurance company selected samples of clients under 18 years of age and over 18 and recorded the number of accidents they had in the previous year. The results are shown below. Under Age of 18 Over Age of 18 n 1 = 500 n 2 = 600 Number of accidents = 180 Number of accidents = 150 We are interested in determining if the accident proportions differ between the two age groups.

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