To determine the viscosity of an engine oil, a ball is dropped into a calibrated tube filled with this oil, and the time taken for the ball to travel a determined distance is measured. After having carried out 26 tests, an average time of 22.85 seconds and a standard deviation of 0.40 seconds were calculated. a) From these results, the laboratory states that the average time to cover the distance lies between 22.6868 and 23.0132 seconds. What is the confidence level associated with this statement? Answer: (1- a) = b) Find the 90% confidence interval to estimate the average time it takes for the ball to travel the distance. Answer: = -n = +1 c) How many additional trials must be carried out if we want to estimate the average time to cover the distance with the same margin of error as in a) but with a confidence level of 99%? Answer: n 2

To determine the viscosity of an engine oil, a ball is dropped into a calibrated tube filled with this oil, and the time taken for the ball to travel a determined distance is measured. After having carried out 26 tests, an average time of 22.85 seconds and a standard deviation of 0.40 seconds were calculated. a) From these results, the laboratory states that the average time to cover the distance lies between 22.6868 and 23.0132 seconds. What is the confidence level associated with this statement? Answer: (1- a) = b) Find the 90% confidence interval to estimate the average time it takes for the ball to travel the distance. Answer: = -n = +1 c) How many additional trials must be carried out if we want to estimate the average time to cover the distance with the same margin of error as in a) but with a confidence level of 99%? Answer: n 2

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Description: Please help by providing detailed explanation to answers. Thanks To determine the viscosity of an engine oil, a ball is dropped into a calibrated tube filled with this oil,and the time taken for the ball to travel a determined distance is measured. A

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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