A new design for the braking system on a certain type of car has been proposed. For the current system, the true average braking distance at 40 mph under specified conditions is known to be 120 ft. It is proposed that the new design be implemented only if sample data strongly indicates a reduction in true average braking distance for the new design. (a) Define the parameter of interest. Op = true proportion of cars whose braking distances did not reduce OH= true average braking distance for the new design Op = true proportion of cars whose braking distances reduced Ou= true average braking distance for the old design State the relevant hypotheses. O Ho: u - 120 H: H+ 120 O Hoi H = 120 H:u > 120 O Ho: p = 120 H:p < 120 O Ho: p = 120 H: p+ 120 O Ho: H = 120 H:H< 120 (b) Suppose braking distance for the new system is normally distributed with o = 13. Let X denote the sample average braking distance for a random sample of 36 observations. Which values of x are more contradictory to H. than 117.27 Ox2 117.2 Oxs 117.2
A new design for the braking system on a certain type of car has been proposed. For the current system, the true average braking distance at 40 mph under specified conditions is known to be 120 ft. It is proposed that the new design be implemented only if sample data strongly indicates a reduction in true average braking distance for the new design. (a) Define the parameter of interest. Op = true proportion of cars whose braking distances did not reduce OH= true average braking distance for the new design Op = true proportion of cars whose braking distances reduced Ou= true average braking distance for the old design State the relevant hypotheses. O Ho: u - 120 H: H+ 120 O Hoi H = 120 H:u > 120 O Ho: p = 120 H:p < 120 O Ho: p = 120 H: p+ 120 O Ho: H = 120 H:H< 120 (b) Suppose braking distance for the new system is normally distributed with o = 13. Let X denote the sample average braking distance for a random sample of 36 observations. Which values of x are more contradictory to H. than 117.27 Ox2 117.2 Oxs 117.2
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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