Social Media Harris Interactive conducted a surveu in which they asked adult Americans (18 years or older) whether they used social media (Facebook, Twitter, and so on) regularly. The following table is based on the results of the survey.   18-34 35-44 45-54 55+ Total Use social media 117 89 83 49 338 Do not use social media 33 36 57 66 192 Total 150 125 140 115 530   a) If an adult American is randomly selected, what is the probability he or she uses social media? b) If an adult American is randomly selected, what is the probability he or she is 45 to 54 years of age? c) If an adult American is randomly selected, what is the probability he or she is a 35 to 44 year old social media user? d) If an adult American is randomly selected, what is the probability he or she is 35 to 44 years old or uses social media?

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A: Introduction There are 2 types sampling methods: Prob. methods Non-Prob. methods

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Q: Prob 3

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A:

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A: Introduction: It is required to identify the sampling technique used.

Q: Please do not give solution in image format thanku A confidential survey aims to estimate the…

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Q: In a survey conducted by a reputable marketing agency, 277 of 1000 adults 19 years of age or older…

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Q: Assume that 1500 births are randomly selected and 760 of the births are girls. Use subjective…

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Q: In an AOL survey of Internet users, this question was posted online: "Have you ever been hit by a…

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Q: A sample survey by Nielsen Media Research looked at computer access and use of the Internet. Whites…

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Q: The names of all 50 students in a class are written on identical slips of paper, and the slips are…

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Q: The FiveThirtyEight website did a survey of people about their attitudes about the pandemic and…

A:

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A: Given that Candidate A got 32 votes, candidate B got 10 votes and candidate C got 20 votes.

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A: A political scientist surveys 40 of the current 435 voting representatives in congress

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Q: Would observations or interviews be more appropriate to research the following topic? How…

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Q: An ice hockey team is considering changing their team name and mascot and would like to measure city…

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Q: Assume that 800 births are randomly selected and 39 of the births are girls. Use subjective judgment…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.