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Solved: Should we use t? Determine whether we can safely use a t* critical value to

The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor ISBN: 9781464108730 488

Solution for problem 59 Chapter 8.3

The Practice of Statistics | 5th Edition

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The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor

The Practice of Statistics | 5th Edition

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Problem 59

Should we use t? Determine whether we can safely use a t* critical value to calculate a confidence interval for the population mean in each of the following settings. (a) We collect data from a random sample of adult residents in a state. Our goal is to estimate the overall percent of adults in the state who are college graduates. (b) The coach of a college mens basketball team records the resting heart rates of the 15 team members. We use these data to construct a confidence interval for the mean resting heart rate of all male students at this college. (c) Do teens text more than they call? To find out, an AP Statistics class at a large high school collected data on the number of text messages and calls sent or received by each of 25 randomly selected students. The Fathom boxplot below displays the difference (texts calls) for each student.

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Lecture 11: Difference in Population Proportions 1. Independent Samples Scenario -­‐ Two samples are independent samples when the measurements in one sample are not related to the measurements in the other sample. -­‐ Example: 1. Random samples taken separately from 2 populations and same response variable is recorded for each individual. 2. One random sample is taken and a variable is recorded 3. Participants randomly assigned

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Chapter 8.3, Problem 59 is Solved
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Textbook: The Practice of Statistics
Edition: 5
Author: Daren S. Starnes, Josh Tabor
ISBN: 9781464108730

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Solved: Should we use t? Determine whether we can safely use a t* critical value to