A random sample of 15 new born babies are taken from a large hospital. Weight in pounds are given below: 11.2,6.5,5.3,7.5,7.2,9.5,11.2,8.5,6.2,9.7,15.0,17.4,18.2,8.9,6.1 Use R to answer the following: Rcode is: t.test(data) (a)What is the point estimate of the population mean weight? (b)Calculate 80% confidence interval for the actual population mean.