$\begin{gathered} \operatorname{mean}=1.615 \\ \text{Standard deviation = 1.387} \\ \text{Confidence level =99\%} \\ \text{sample = 8} \end{gathered}$

Step-by-step explanation

We can find the confidence interval using the formula below;

$CI=\bar{x}\pm z.\frac{s}{\sqrt[]{n}}$

CI = confidence interval

x = sample mean

z = confidence level value

s = sample standard deviation

n = sample size

For a 99% confidence interval, the confidence level value is 2.576

Therefore, the CI can be gotten by inserting all the stated values into the formula.

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