In 2002, the median pH level of the rain in a national park was 5.30. A biologist thinks that the acidity of rain has decreased since then. (This would mean that the pH level of the rain has increased.) She obtains a random sample of 19 rain dates in 2008 and obtains the accompanying data. Determine the P-value of the hypothesis test performed in the statement. Click the button to see the data table. i Click the button to see the method of calculation of the P-value. The P-value is . (Round to four decimal places as needed.) Data Table X 5.23 5.38 5.50 5.31 5.37 5.19 5.26 5.45 5.38 5.25 5.27 5.22 5.21 5.27 5.56 5.15 5.35 5.30 5.25 Print Done