The owner of the House of Greens Greenhouse wants to estimate the mean height that her seedlings grow. A sample of 18 plants were chosen and their growth was recorded over a period of a month. It was found that the sample mean was 18.00 cm and the sample standard deviation was 3.49 cm. Given this information, develop a 95.0% confidence interval estimate for the population mean (assuming the best point estimate for the population mean is the sample mean). g