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2. The text file "carseats.txt" is a data set containing sales of child car seats at different stores. It consists of 11 variables. Use either acen test!) or teteatl] to answer following question. Urban: Yes and No indicate whether the store is in an urban or rural area. Price: Price company charges for car seats at each location. CompPrice: Price charged by competitor at each location. a) Find the 95% confidence interval to estimate the population proportion of store located in rural area. b) Studies found that less than 30% of stores are located in the Urban. State null and alternative hypotheses and perform the hypothesis test. c) Find 95% confidence interval to estimate the population mean of car seats price. d) Studies found that mean price is greater than 110. State null and alternative hypotheses and perform the hypothesis test. e) Find 95% confidence interval to estimate the difference between population mean car seat price of stores located in rural area and population mean car seat price of stores located urban area. f) Studies found that population mean car seat price of stores located in urban area is not different from population mean car seat price of stores located in rural area. State null and alternative hypotheses and perform the hypothesis test. g) Find 95% confidence interval to estimate the population mean of paired difference in price between our stores and competitors. h) Studies found that population mean price of our stores is different population mean price of competitors. State null and alternative hypotheses and perform the hypothesis test