In 2012, Pew Research Center conducted a major survey regarding smartphone use in the United States....

 

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In 2012, Pew Research Center conducted a major survey regarding smartphone use in the United States. Among many interesting probes (one key finding was that 46% of American adults are using smartphones; this number is much lower than some countries in Europe and Asia), one very interesting question is how age and income levels are related to smartphone users. The following table was the survey result from the people who are currently using the smartphone. Use this table to construct the probability table based on relative frequency and answer questions 1 to 7. 18-29 30-49 50-64 65+ < $30K 83 93 40 20 $30K or more 139 X 181 62 total 222 355 221 82 I [1 pt] Many advertisers consider people who are in the 18-29 group to be prime "target" consumers for viral marketing campaigns. If we select 10 smartphone users randomly, what is the probability that there are 3 or fewer smartphone users in the target age group? In 2012, Pew Research Center conducted a major survey regarding smartphone use in the United States. Among many interesting probes (one key finding was that 46% of American adults are using smartphones; this number is much lower than some countries in Europe and Asia), one very interesting question is how age and income levels are related to smartphone users. The following table was the survey result from the people who are currently using the smartphone. Use this table to construct the probability table based on relative frequency and answer questions 1 to 7. 18-29 30-49 50-64 65+ < $30K 83 93 40 20 $30K or more 139 X 181 62 total 222 355 221 82 I [1 pt] Many advertisers consider people who are in the 18-29 group to be prime "target" consumers for viral marketing campaigns. If we select 10 smartphone users randomly, what is the probability that there are 3 or fewer smartphone users in the target age group?