One-year-old Jude Immanuel Bijoy was among five children shifted from the cardiothoracic intensive care unit (ICU) of MIOT Hospital in Chennai Thursday when the hospital realised it could not manage critically ill patients as flood water had knocked out power and oxygen supply for 48 hours.
Now we have to be very careful. There are two standard deviations listed on the calculator. The symbol Sx stands for sample standard deviation and the symbol stands for population standard deviation. If we assume this was sample data, then our final answer would be.
For a population with unknown mean and unknown standard deviation, a confidence interval for the population mean, based on a simple random sample (SRS) of size n, is + t* , where t* is the upper (1-C)/2 critical value for the t distribution with n-1 degrees of freedom, t(n-1).f the measurements follow a normal distribution, then the sample mean will have the distribution N(,) . Since the sample size is 6, the standard deviation of the sample mean is equal to 1.2/sqrt(6) = 0.49.