2. From the survey, the number of respondents who were "Happy" and total sample size were reported in the table. Assume that each data are normally distributed. Please construct and interpret confidence interval estimates for each nation at the 95% level.(You don't need to compare across countries) Country Number of "Happy" Sample size Hungary France 528 1,041 428 1,201 Denmark 214 2,033

2. From the survey, the number of respondents who were "Happy" and total sample size were reported in the table. Assume that each data are normally distributed. Please construct and interpret confidence interval estimates for each nation at the 95% level.(You don't need to compare across countries) Country Number of "Happy" Sample size Hungary France 528 1,041 428 1,201 Denmark 214 2,033

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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Data on the fuel economy of several 2010 model vehicles are given in the accompanying table. Complete parts (a) and (b) below. Click the icon to view the table of fuel economy data. a) Find and interpret a 95% confidence interval for the gas mileage of 2010 vehicles. Select the correct choice below and fill in the answer boxes within your choice. (Round to two decimal places as needed. Use ascending order.) OA. 95% of all cars like the ones in the sample have gas mileages between mpg and mpg. mpg and mpg. OB. One is 95% confident that the gas mileage of a randomly selected car like the ones in the sample is between OC. One is 95% confident that the true mean gas mileage for cars like the ones in the sample is between D. The true mean gas mileage for cars like the ones in the sample is between mpg and mpg 95% of the time. mpg and mpg. b) Does this confidence interval capture the mean gas mileage for all 2010 vehicles? Choose the correct answer below. 4 OA. There is a 95% chance that…
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