Question 235513: i have a question in the grouped data in statistics , they asking the probability that an emloyee . taken at random , earns more than 20000 pounds , total workers are 68 and they have group which interval is between 15000-24.999 . plzzzzzz help meeeeee
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! i have a question in the grouped data in statistics , they asking the probability that an emloyee . taken at random , earns more than 20000 pounds , total workers are 68 and they have group which interval is between 15000-24.999 .
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If the interval is 15000 to 24999
the range is 9999
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Use the median of the interval as the mean:
mean = (15000+24999)/2 = 19999.5
Rounding that up the mean is 20,000
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If 20,000 is the mean, the probability an employee
picked at random earns more that 20,000 is 50%.
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Cheers,
Stan H.
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