Question #312434

The numbers of workers of a new fast-food restaurant with 7 outlets are 8, 9, 8, 10, 12, 11, and 7. compute the following: Population mean: Population variance population standard deviation


1
Expert's answer
2022-03-17T03:41:38-0400

μ=17Σi=17xi=657=9.2857.\mu=\frac{1}{7}\Sigma_{i=1}^7x_i=\frac{65}{7}=9.2857.

σ2=17Σi=17(xiμ)2=19.42867=2.7755.\sigma^2=\frac{1}{7}\Sigma_{i=1}^7(x_i-\mu)^2=\frac{19.4286}{7}=2.7755.

σ=2.7755=1.6660\sigma=\sqrt{2.7755}=1.6660 .


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