The following data represent the pH of rain for a random sample of 12 rain dates in Tucker County, West Virginia. A normal probability plot suggests the data could come from a population that is...

The following data represent the pH of rain for a random sample of 12 rain dates in Tucker County,

West Virginia. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers.

4.58

5.19

5.05

4.80

4.77

4.77

5.72

4.75

5.02

4.74

4.76

4.56

a.) Determine the point estimate for the population mean pH of rainwater in Tucker County.

b.) Construct and interpret a 95% confidence interval for the mean pH of rainwater in Tucker County, West Virginia.