6 Suppose we have the following sample statistics n 47 x 1

6. Suppose we have the following sample statistics: n = 47, x = 13.4 n=47, = 2.25, median = 14.5 (a) What is the point estimate for the population mean?

Solution

a).Point estimate of population mean =13.4

Point estimate of population variance =2.25

b).Point estimate of population standard deviation =sqrt(2.25) = 1.5

(the sample mean would be a point estimate of the population mean .)

(the sample variance would be a point estimate of the population variance.)