please help with question a

9.2.31 'T Question Help v The following data represent the pH of rain for a random sample of 12 rain dates. Anormal Q probability plot suggests the data could come from a population that is normally distributed. A 5.30 5.72 4.89 4.80 boxplot indicates there are no outliers. Complete parts (a) through (d) below. 5.02 5.16 4.74 5.19 5.34 4.76 4.56 4.68 (a) Determine a point estimate for the population mean. A point estimate for the population mean is D. (Round to two decimal places as needed.)