Exercise 10-1 Algo

Consider the following data drawn independently from normally distributed populations: (You may find it useful to reference the appropriate table: z table or t table)

x?1x?1 = 26.8	x?2x?2 = 29.3
?12 = 93.9	?22 = 92.3
n1 = 34	n2 = 27

a. Construct the 99% confidence interval for the difference between the population means. (Negative value should be indicated by a minus sign. Round final answers to 2 decimal places.)