2. In order to manage the population of a special type of worms in a garden, we need to know their average length. We randomly catch 30 worms and measure their lengths, which turns out to have an average of 15 cm and a standard deviation of 3 cm. Construct a 95% confidence interval for the average length of the worms in the garden. Use course slides and take a snapshot of the confidence interval formula that you use for your calculations and include that in your word file. Clearly show how you calculate each component of the formula