In a group of 100 children, the weight of a child is 15 kg. The standard error is 1.5 kg. Which one of the following is TRUE -

Here the examiner himself has given us the value of standard error = 1.5 So, we can directly apply sample data to the population. 95% of data will be covered by 2 standard error = 15 ± 2 SE = 12 ± 3 = 12 to 18