Question

Please show ALL work and provide legible responces

1. Suppose the car tires “Prof’s Choice” on most compact vehicles have an average braking distance while traveling at the speed limit on the freeway of 84ft.  Through extensive testing it is found that braking distances are right skewed.  A new version of the tires is released claiming improved (lower) braking distance.  After analyzing 90 randomly selected measurements, you get an average braking distance of 81ft with a standard deviation of 13ft.  Is there enough evidence to suggest that the new tires have a lower braking distance?  
   Use alpha = 0.02.

Ho : _____________  H1 : ______________   
Type of Test (Left/Right/Two-tailed): _________________  

Value of the Test Statistic (Z or T): _________________   P-Value: ____________________

Condition Verification:

Conclusion:

Answer 1

The solution to this problem is given by