1. With that database, elaborate a 95% confidence interval for age?both by hand and using Excel to calculate the pieces need to perform the calculation.
2. Also, assuming that the distribution of age has a normal shape, determine the age percentile of the 72-year-old male in the data set - both by hand and using Excel to calculate the pieces need to perform the calculation.

Gender Frequency Percentage Age Statistics for Age Male 50% 50 Mean 44.5 Female 50% 39 Standard devaition 21.4 Total 10 19 Median 41 22 50th percentile 41 Ethnicity Frequency Percentage 88 Hispanic 2 20% 37 African American 20% 43 European American 30% 72 Asian American 20% 45 Native American 10% 30 Total 10