O Points: 0 of 1 Save The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates TE 5.05 5.72 4.38 4.80 there are no outliers. Complete parts a) through d) below. 5.02 4.59 4.74 5.19 GE 4.61 4.76 4.56 5.70 Click the icon to view the table of critical t-values. (a) Determine a point estimate for the population mean. A point estimate for the population mean is (Round to two decimal places as needed.)