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Truck Ban 9 information in the ple and do the indicated tasks to provide the miSSi" Study the next exam solution. s of people who are in favor of trUck rages of those who are in favor of wanted to determine the point based on 500 observationa ban infosgggmgo meted? SUWey among 10 random sample the ban As on. of a metropolitan area. He determined the percen . estimate ofimmg thatlthe only error present is the sampling error. he Th f It - e Population mean Percentage and the standard deviation . e D owmg numbers renresent the percentages of the 10 surveys. 47.0 56.4 50.1 60.2 43.0 55.3 60.0 59.5 63.0 57-5 Solution: 1. Find the mean of the percentages. ' _ X Formula: 5? -Zn where X is a percentage 47.0 + 56.4 + 50.1 + + 57.5 10 ' Find the sum of the values in the numerator and n 1. n_1 . . . 2 2. Drvrde the sum by 9. 5,: (47.0-__J +(56.4-__t'+...+(57.5.__)2 9 . 52: This result is called variance. Extract the square root of s'. S = This value is called 4. Describenterpret the result .5 Scanned with Cam-n