Question 1: We want to study the spending for Christmas gifts of households that have kid(s) in a city last year. A simple random sample of 100 households is taken and only 64 out of 100 households have kid(s). The following table summarizes the amount of money these 64 households spent last year: Amount of money spent (CAD) |10 20 30 40 50 60 70 80 90 100 Number of households 5 7 15 9 15 7 2 3 1 0 Assume that the number of households of this city is much larger than 100. 1. Estimate the average amount of money a household that has kid(s) in this city spent for Christmas gifts last year, and construct a 95% confidence interval. (1pts) 2. Further assume that this city has 10,000 households. Estimate the total amount of money all households that has kid(s) in this city spent for Christmas gifts last year, and construct a 95% confidence interval for this quantity. (2pts)