7. A random sample of size n=20 was drawn from a population ofsize N=300. The me

7. A random sample of size n=20 was drawn from a population ofsize N=300. The measurements shown in a table to the right wereobtained: 36 25 54 28 26 25 36 22 51 33 18 51 30 36 51 51 31 40 3741 a. Estimate mean with an approximate 95% confidence interval. b.Estimate p the proportion of measurements in the population thatare greater than 30 with an approximate 95% confidence interval