SOLUTION: According to Chebyshevs theorem about 75% of a particular gym members aged between 19.4 and 76.6. Use this information to find the mean and standard deviation of the ages of the me
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Question 654261: According to Chebyshevs theorem about 75% of a particular gym members aged between 19.4 and 76.6. Use this information to find the mean and standard deviation of the ages of the members of a gym. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! According to Chebyshevs theorem about 75% of a particular gym members aged between 19.4 and 76.6. Use this information to find the mean and standard deviation of the ages of the members of a gym.
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Solve:
1-(1/k)^2 = 0.75
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k = 2
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So, u + 2s = 76.6
And u - 2s = 19.4
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Subtract to get:
4s = 57.2
s = 14.3 (that is the standard deviation)
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Solve for "u":
u + 2*14.3 = 76.6
u = 76.6 - 28.6
u = 48 (that is the mean)
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Cheers,
Stan H.
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