Problem 4 A company producing electric cars advertise a reach of 500 km for a certain model. On suspicion that the company was exaggerating the reach in their advertising, an independent test was done on six different cars. The test gave the following reach in km. We assume that the reach of electric cars follows a normal distribution. 465, 460, 490, 480, 470, 485 a) What are the sample mean and sample standard deviation? b) Estimate a 95 % two tailed confidence interval for the population mean. c) Use a t-test to determine whether there is reason to believe that the company has been exaggerating the car's reach (even though the sample is small). Test at the 5 % level. d) Show how you conclude using a diagram.

Problem 4 A company producing electric cars advertise a reach of 500 km for a certain model. On suspicion that the company was exaggerating the reach in their advertising, an independent test was done on six different cars. The test gave the following reach in km. We assume that the reach of electric cars follows a normal distribution. 465, 460, 490, 480, 470, 485 a) What are the sample mean and sample standard deviation? b) Estimate a 95 % two tailed confidence interval for the population mean. c) Use a t-test to determine whether there is reason to believe that the company has been exaggerating the car's reach (even though the sample is small). Test at the 5 % level. d) Show how you conclude using a diagram.

Name: Proble m 4A company producing electric cars advertise a reach of 500
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Description: Proble m 4A company producing electric cars advertise a reach of 500 km for a certain model. Onsuspicion that the company was exaggerating the reach in their advertising, an independenttest was done on six different cars. The test gave the following

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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