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Problem #14) A survey of 1000 families was conducted to find how many dogs were owned...

Problem #14) A survey of 1000 families was conducted to find how many dogs were owned by each respondent. The following table summarizes the results.

Number of Dogs: Xi Number of families: Frequency
0 236
1 310
2 282
3 122
4 50
Total 1000

a) Calculate the mean (See table): Justify you answers.

μ =  round to 2 decimals.

b) Determine the variance

σ 2 = ξ − μ 2 =  round to 4 decimals

c) Compute the standard deviation σ = σ 2 =  Round to 4 decimals

0 0
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