12.5 = X
Cross multiply, which makes 4x=50
Then divide 4 from 50 and get 12.5
Answer:
X=5
Step-by-step explanation:
-3x-5+4x=0
or,-3x+4x=0+5
or,x=5
Answer:
a18[4-1] is the answer
Step-by-step explanation:
hope it helps
Answer:
4
Step-by-step explanation:
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Answer:
a) 95%
b) At least 75%
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
68% of the measures are within 1 standard deviation of the mean.
95% of the measures are within 2 standard deviation of the mean.
99.7% of the measures are within 3 standard deviations of the mean.
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is at least .
a. According to the empirical rule, what percentage of these funds is expected to be within ±2 standard deviations of the mean?
95%
b. According to the Chebyshev rule, what percentage of these funds are expected to be within ±2 standard deviations of the mean?
At least 75%