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A random sample of six CEOs reported how many times per year they play tennis. The data follows.

3 41 96 32 52 19

Assuming the number of games played is normally distributed and the population standard deviation σ = 10, a 95% confidence interval for μ is:

8 answers

95% = mean ± 1.96 SEm

SEm = SD/√n

28.5

10

28.5, 44.5

28.5,44.5

96

3 96

cap

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