homework-22-and-23 (webworkZwardSTAT2231 F2017/Homework-22-and-237 user leonel r

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homework-22-and-23 (webworkZwardSTAT2231 F2017/Homework-22-and-237 user leonel r kafando%40GeorgiaSouthem.edu&effectiveUserleonel; .kafand0%40GeorgiaSouthern.ec 1 4 Homework 22 and 23: Problem 4 usersloonel r kafando%40GeorgiaSouthern eduseffectiveUser-leonel r kafandowoGeorgi Southern eduske usereleonel r kafando%40GeorgiaSouthern.edu&effectiveUsereleonel; r kafandoSA0GeorgiaSouthem.edu&ke; user-leonel, r kafand0%40GeorgiaSouthem.edu&effectiveUsereleonel; r katando%40GeorgiaSouthern.edu&ke; Previous (webwork2/wardSTAT2231F2017/Hc Problem List (webwork2/wardSTAT2231F2017 Next (webwork2/wardSTAT2231F2017/Hom (1 point) The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.8 grams per mile and standard deviation 0.18 grams per mile. (a) What sample size is needed so that the standard deviation of the sampling distribution is 0.01 grams per mile? Hint: You already have an equation that gives a relationship between the population standard deviation, the sampling distribution's standard deviation, and the sample size. Do a little algebra to solve that equation for the sample size. ANSWER: (b) If a smaller sample is considered, the standard deviation for would be (NOTE: Enter "SMALLER "LARGER or "THE SAME" without the quotes.) Note: You can earn partial credit on this problem. Preview My AnswersSubmit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Email instructor Page generated at 11/03/2017 at 11:08am EDT WeBWork e 1996-2016 theme: math4 I ww version: 2.121 pg version: 2.121 The WeBWorK Project (http/webwork.maa.org)

Explanation / Answer

a) Sample size = (0.18/0.01)^2 = 324

b) if the smaller sample is considered, the standard deviation would be LARGER

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