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The following summary data reect the number of days people rented a car for a sample of people in each of three cities. n sample

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The following summary data reect the number of days people rented a car for a sample of people in each of three cities. n sample Mean Sample Variance Boston 5 3.60 5.80 Dalas 6 6.67 7.07 Seattle 4 7.75 6.25 The value of the pooled variance estimate is O A. 6.442 O B. 6.428 O c. 6.373 O D. 5.153

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