An article reported that for a sample of 56 kitchens with gas cooking appliances monitored during a one-week period, the sample meanCO₂ level (ppm) was 654.16, and the sample standard deviation was 166.76.(a) Calculate and interpret a 95% (two-sided) confidence interval for true average CO₂ level in the population of all homes fromwhich the sample was selected. (Round your answers to two decimal places.)) ppmInterpret the resulting interval.O We are 95% confident that this interval does not contain the true population mean.O We are 95% confident that the true population mean lies below this interval.We are 95% confident that this interval contains the true population mean.We are 95% confident that the true population mean lies above this interval.(b) Suppose the investigators had made a rough guess of 185 for the value of s before collecting data. What sample size would benecessary to obtain an interval width of 53 ppm for a confidence level of 95% ? (Round your answer up to the nearest wholenumber.)kitchens

Answered: An article reported that for a sample…

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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