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  3. 2) male company employees aged 21 to 26 are found

2) Male company employees aged 21 to 26 are found to drive an average of 19484...

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Statistics

2) Male company employees aged 21 to 26 are found to drive anaverage of 19484 km a year. The annual mileage is normallydistributed with a standard deviation of 6812 km. The company hasdecided to levy a user fee on those employees who are in the top30%. Find the yearly mileage total of those who will be charged auser fee.

3) If α = 0.06, standard deviation is s = 3.15, samplemean is x= 12.7, and n = 500, find the confidenceinterval for the population mean.

Answer & Explanation Solved by verified expert
3.6 Ratings (496 Votes)
Solution1 Given thatmean 19484standard deviation 6812Using standard normal tablePZ z 30 1    See Answer
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