A salmon farm in Norway is exporting salmon to customers around the world. The salmon nursery process starts from hatching toward catching after the salmon is large enough. The regulations prohibit catching if the average size (length in cm) is less than a certain value. The fa rm randomly selects the salmon and measure the length. The data are shown below. Suppose also that the standard deviation of the population is known to be 4.5 cm. 68.6 61.2 63.2 53.1 62.3 59.7 55.4 58.9 60.9 69.2 63.7 67.8 65.6 65.5 56.0 57.8 66.0 62.9 53.6 65.0 55.8 60.4 69.3 62.3 Construct 80% confidence interval for p