iPad 12:16 PM 100% webwork.clayton.edu ¢ +0 Chapter 7 Homework-Introductory Stat

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iPad 12:16 PM 100% webwork.clayton.edu ¢ +0 Chapter 7 Homework-Introductory Statistics Section o.. WeBWorK: M1231-06-SP18: StatChapter07: 2 Logged in as shunt18 MATHEMATICAL ASSOCIATION OF AMERICA Log Out WeBWork webwork/ m1231-06-sp18 / statchapter072 MAIN MENU Courses Homework Sets StatChapter07: Problem 2 Previous Problem Problem List Next Problenm Prob User Settings Grades 1 point) In a very large population, the distribution of annual income is skewed, with a long right tail. We take a Simple Random Sample of n people from this population and record the mean annual income of the people in the sample. (a) lf n = 3, we would expect the distribution of sample means to be A. skewed to the right. OB. an approximately Normal distribution. O C-skewed to the left. D. an approximately Uniform distribution. (b) If n = 48, we would expect the distribution of sample means to be OA. an approximately Normal distribution. Problem 1 Problem 3 Problem 4 Problem 5 Problem 6 Problem 7 Problem 8 B. an approximately Uniform distribution. OC. skewed to the right D. skewed to the left. (C) If n 133, we would expect the distribution of sample means to be OA. an approximately Normal distribution. B. skewed to the left. OC. an approximately Uniform distribution. OD. skewed to the right. Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. Email instructor

Explanation / Answer

For n > 30, the distribution should be approximately normal. Hence,

a) Option A is correct.

b) Option A is correct.

c) Option A is correct.

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