Two psychologists surveyed 562 children in grades 4, 5 and 6 in elementary schools in Michigan. They stratified their sample drawing roughly 1/3 from rural, 1/3 from suburban and 1/3 from urban schools. Among other questions they asked students whether their primary goal was to get good grades, to be popular, or to be good at sports. One question of interest was whether boys and girls at this age had similar goals. Grades Popular Sports Total Boy 120 67 87 274

The premiere of Game of Thrones' seventh season set a series record of 10.1 million viewers tuning in to the live broadcast, and the season finale got even more than that at 12.1 million. A researcher at HBO believes that the average number of viewers watching live is not equal to the average number of those streaming online. The data below demonstrate a sample the number of of people watching live for each episode and the number of people streaming for each of the same episode.  Episode Live (millions) Streaming (millions) Season 1 Episode 1 2.9 0.7 Season 3 Episode 4 8.4 5.0 Season 5 Episode 1 8.7 6.3 Season 5 Episode 5 8.6 6.0 Season 6 Episode 3 9.3 8.4 Season 7 Episode 1 10.11 6.4 Season 7 Episode 5 10.72 6.7 Season 7 Episode 7  12.10 7.5 Based on the results of your t-test, can we conclude that the mean number of people viewing live is different from the mean number of people streaming online?    Group of answer choices a) No, because the p value is greater…

College students were surveyed to check what they favored between basketball, football or baseball. The result of the survey is listed in the table below.     Favorite sports   Basketball Football Baseball Total Male 22 40 15   Female 45 12 16   Total

In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin of error - the largest (reasonble) error that the poll could have. For example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% (72% minus 4% to 72% plus 4%).   In a (made-up) poll, the proportion of people who like dark chocolate more than milk chocolate was 37% with a margin of error of 2.5%. Describe the conclusion about p using an absolute value inequality.   . That lets you type in a vertical bar | to represent absolute values. Also, when you type in  <  and then =, the symbolic entry option will automatically convert that to  ≤ . In the same way, if you type in  >  and then =, the symbolic entry option will automatically convert that to  ≥.   Be sure to use decimal numbers in your answer (such as using 0.40 for 40%).