question archive 1) A poll taken during the recession in 2008 asked 600 adults a series of questions about the state of the economy and their children's future
1) A poll taken during the recession in 2008 asked 600 adults a series of questions about the state of the economy and their children's future
Subject:StatisticsPrice: Bought3
1) A poll taken during the recession in 2008 asked 600 adults a series of questions about the state of the economy and their children's future. One question was, "Do you expect your children to have a better life than you have had, a worse life, or a life about the same as yours?" The responses showed 242 better, 310 worse, and 48 about the same.
a. Use the sign test and alpha = 0.05 to determine whether there is a difference between the number of adults who feel their children will have a better life compared to a worse life.
b. What is your conclusion?
2)The Scholastic Aptitude Test (SAT) consists of three parts: critical reading, mathematics, and writing. Each part of the test is scored on a point scale with a median of approximately 500 (The World Almanac, 2009). Scores for each part of the test can be assumed to be symmetric. Use the following data to test the hypothesis that the population median score for the students taking the writing portion of the SAT is 500:
Writing Score
635 502 447 701 405 590 439 453 337 447 471 387 464 476 514
Using alpha = 0.05, what is your conclusion?
