Given t$_{0.025,3}$=3.18

Part - I

Given that the four estimates, $\overline{\rho_r}$ of Able's utilization

1. Compute overall point estimate

   $\begin{aligned} \hat{\rho_r} &= \frac{1}{R} \sum_{r=1}^R \space \hat{P_r} \\ &= \frac{1}{4} (0.808 + 0.875 + 0.708 + 0.842) \\ &= 0.808 \end{aligned}$

2. Compute the estimate of variable of $\hat{\rho}$

   $\begin{aligned} \hat{\sigma}^2 (\hat{\rho}) &= \frac{1}{(R-1)} \sum^R_{R_{r-1}} …