(Solved): An UPPER BOUND of a \( 95 \% \) confidence interval for the mean scores in a Math256 quiz is \( 3. ...

An UPPER BOUND of a \( 95 \% \) confidence interval for the mean scores in a Math256 quiz is \( 3.0 \) and the mean is \( 2.6 \) based off a SRS of size \( n=16 \). Assuming normal distribution, the population standard deviation is given by: Please write you answer to 3 decimal places. Either type in your answer or attach a pic of your work