(Solved): Measurements of left ventricular ejection fraction on a sample of subjects return the following res ...

Measurements of left ventricular ejection fraction on a sample of subjects return the following results: [1] $\begin{array}{llllllllllll}72& 52& 61& 62& 63& 57& 67& 62& 59& 64& 54& 51\end{array}$ SD calculated on the sample = [1] 6.154575 The confidence interval for the mean is: Scegli una o più alternative: a. None of the above b. $56.55?64.11$ c. $60.55?68.11$ d. $53.55?61.11$