In a survey, 122 statistics students were asked how many siblings they have, and the results are
Question:
In a survey, 122 statistics students were asked how many siblings they have, and the results are the shown in the dotplot. The mean number is 2.172 siblings and the standard deviation is 1.328 siblings. We will assume the 122 students surveyed are representative of all the students at the school.
a. Describe the parameter estimated by the students.
b. Verify the validity conditions for a theory-based confidence interval.
c. Use the Theory-Based Inference applet to construct a 95% confidence interval and interpret it in the context of the problem.
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a The average number of siblings for all students at this sc...View the full answer
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Related Book For 
Introduction To Statistical Investigations
ISBN: 9781119683452
2nd Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy
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