After interviewing 30 third-year students, it is found that the sample mean of their happiness index = 72, sample variance = 37. The 99% confidence interval of the population mean is therefore given by (choose the best answer below: a) Pr(66.3124≤μ≤78.4852)=99% b) Pr(73≤μ≤77)=99% c) Pr(68.11≤μ≤76.52)=99% d) D. Pr(69≤μ≤75)=99% e)

MATLAB: An Introduction with Applications
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After interviewing 30 third-year students, it is found that the sample mean of their happiness index = 72, sample variance = 37. The 99% confidence interval of the population mean is therefore given by (choose the best answer below:

a) Pr(66.3124≤μ≤78.4852)=99%

b) Pr(73≤μ≤77)=99%

c) Pr(68.11≤μ≤76.52)=99%

d) D. Pr(69≤μ≤75)=99%

e) 

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