Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes.
Is there a major difference between the two pieces of equipment? Why or why not?
Sample Solution
Construct a 95 percent confidence interval for the difference between the proportions of service contracts sold on treadmills versus exercise bikes.
Is there a major difference between the two pieces of equipment? Why or why not?
Sample Solution