Jumbo eggs in Australia, on average, are supposed to weigh 59 grams. Margot is in charge of a quality control test that involves weighing a sample of eggs to see if the sample mean weight is significantly different than 59 grams. She takes a random sample of eggs and finds a mean weight of 57 grams and a sample standard deviation of 2 grams. Margot wants to use these sample data to conduct a test on the mean. Assume that all conditions for inference have been met. Calculate the test statistic for Margot's test. You may round your answer to two decimal places.