Discuss the below:
Q: What would be the number of reading if the analyst wanted to be 87% confident that the mean observed time was within +-5 of the true mean & the ff. values were established for an element that 19 cycles were observed?
.09, .08, .10, .12, .09, .08, .09, .12, .11, .12, .09, .10, .12, .10, .08, .09, .10, .12, .09