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A random sample of 160 car purchases are selected and categorized by age The results...

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A random sample of 160 car purchases are selected and categorized by age The results are listed below The age distribution of drivers for the given categories is 18 for the under 26 group 39 for the 26 45 group 31 for the 45 65 group and 12 for the group over 65 Find the critical value xa to test the claim that all ages 2 have purchase rates proportional to their driving rates Use a 0 05 Age Under 26 26 45 46 65 Over 65 Purchases 66 39 25 30 OA 7 815 OB 9 348 OC 11 143 OD 6 251

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