You want to find out how sleep deprivation affects motor performance.

To study this, you have sleep-deprived subjects (such as parents of newborn babies or night-shift workers) record the number of minutes they sleep each night and take a series of motor performance assessments, with 1 minute being the smallest unit on the scale.

1.) Suppose the first subject sleeps 180 minutes. Determine the real limits of 180.

The lower real limit is:

The upper real limit is:

2.)When measuring weight on a scale that is accurate to the nearest 0.1 pound, what are the real limits for the weight of 225 pounds?

A. 224.75-225.25

B. 225-226

C, 224.95-225.05

3.)When measuring weight on a scale that is accurate to the nearest 0.5 pound, what are the real limits for the weight of 131 pounds?

A. 131-132

B. 130.75-131.25

C. 130.95-131.05