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Artist 52 [7]
3 years ago
14

From a sample with nequals=1616​, the mean number of televisions per household is 22 with a standard deviation of 11 television.

using​ chebychev's theorem, determine at least how many of the households have between 00 and 44 televisions.
Mathematics
1 answer:
zvonat [6]3 years ago
4 0
Chebyshev's inequality:
For a wide class of distributions, no more than \frac{1}{k^2} of the values can be outside of k standard deviations of the mean.

Here, 
n = 16
μ = 2
σ = 1
range iin question = 0 to 4 =2\pm2=\mu\pm\sigma
=> k=2
\frac{1}{k^2}=\frac{1}{4}
meaning that at most 1/4 of the sample is outside the given range, or 3/4 of the sample= (3/4)*16 =12 is within the given range of 0 to 4 televisions.

Answer: at least 12 out of 16 households have between 0 to 4 televisions, according to the Chebyshev's inequality.
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