A survey of 534 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 169 watched TV 150 hung out with friends 32 watched TV and ate pizza, but did not hang out with friends 38 watched TV and hung out with friends, but did not eat pizza 34 hung out with friends and ate pizza, but did not watch TV 26 watched TV, hung out with friends, and ate pizza 91 did not do any of these three activities How may 18-24 year olds (of these three activities) only ate pizza last Friday night?

A survey of 534 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 169 watched TV 150 hung out with friends 32 watched TV and ate pizza, but did not hang out with friends 38 watched TV and hung out with friends, but did not eat pizza 34 hung out with friends and ate pizza, but did not watch TV 26 watched TV, hung out with friends, and ate pizza 91 did not do any of these three activities How may 18-24 year olds (of these three activities) only ate pizza last Friday night?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Due to the popularity of instant messaging and social networking, informal elements such as emoticons (e.g., the symbol “:)” to represent a smile) and abbreviations (e.g., “LOL” for “laughing out loud”) have worked their way into teenagers’ school writing assignments. A Pew Internet and American Life Project (Apr. 2008) survey interviewed 700 randomly selected U.S. teenagers by telephone on their writing habits. Overall, 448 of the teenagers admitted using at least one informal element in school writing assignments. Recall that in a random sample of 700 teenagers, 448 admitted to using at least one informal element in school writing assignments. [Note: Emoticons, such as using the symbol “:)” to represent a smile, and abbreviations, such as writing “LOL” for “laughing out loud,” are considered informal elements.] Is there evidence to indicate that less than 65% of all U.S. teenagers have used at least one informal element in school writing assignments? Test the relevant hypotheses…