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Get Full Access to Stats Modeling The World - 4 Edition - Chapter 17 - Problem 22
Get Full Access to Stats Modeling The World - 4 Edition - Chapter 17 - Problem 22

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# Teens with phones Pew Research reported that, in 2013, 78% of all teens had a cell ISBN: 9780321854018 481

## Solution for problem 22 Chapter 17

Stats Modeling the World | 4th Edition

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Problem 22

Teens with phones Pew Research reported that, in 2013, 78% of all teens had a cell phone. Assume this estimate is correct. a) We randomly pick 100 teens. Let pn represent the proportion of teens in this sample who own a cell phone. Whats the appropriate model for the distribution of pn? Specify the name of the distribution, the mean, and the standard deviation. Be sure to verify that the conditions are met. b) Whats the approximate probability that less than three fourths of this sample own a cell phone?

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Inference for two independent groups: - This means deciding if there’s a statistically significant relationship between explanatory and response variable - If response variable is quantitative, the question involves means o Ex. How does average childhood weight compare between generations - If the response variable is categorical, the question involves proportions o Ex. Does the smoking rate differ between genders Summary of inference for 2 independent population means: - Hypotheses: H 0μ 1μ =2 H A μ1−μ 2¿0 - Sample Statistic: ´ ´ X 1X 2

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##### ISBN: 9780321854018

This full solution covers the following key subjects: . This expansive textbook survival guide covers 31 chapters, and 1357 solutions. The full step-by-step solution to problem: 22 from chapter: 17 was answered by , our top Statistics solution expert on 03/16/18, 04:57PM. The answer to “Teens with phones Pew Research reported that, in 2013, 78% of all teens had a cell phone. Assume this estimate is correct. a) We randomly pick 100 teens. Let pn represent the proportion of teens in this sample who own a cell phone. Whats the appropriate model for the distribution of pn? Specify the name of the distribution, the mean, and the standard deviation. Be sure to verify that the conditions are met. b) Whats the approximate probability that less than three fourths of this sample own a cell phone?” is broken down into a number of easy to follow steps, and 90 words. Stats Modeling the World was written by and is associated to the ISBN: 9780321854018. This textbook survival guide was created for the textbook: Stats Modeling the World, edition: 4. Since the solution to 22 from 17 chapter was answered, more than 240 students have viewed the full step-by-step answer.

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