1 Find a 90% confidence interval for a population meanfor these values. (Round your answers to three decimal places.)

(a) n=125,x=0.86,s²=0.082

_______to_______

'

(b) n=70,x=21.4,s²=3.64

______ to________

2 In addition to teachers and administrative staff, schools also have many other employees, including bus drivers, custodians, and cafeteria workers. In Auburn, WA, the average hourly wage is $16.92 for bus drivers, $17.65 for custodians, and $12.86 for cafeteria workers.Suppose that a second school district employsn=25

bus drivers who earn an average of $14.45per hour with a standard deviation of s= $2.81.

Find a 95% confidence interval for the average hourly wage of bus drivers in school districts similar to this one. (Round your answers to two decimal places.)

$______ to $______