In a National Public Transportation survey conducted in 1995 on the modes of transportation used to commute to work, 79.6% of the respondents said they drive alone, 11.1% carpool, 5.1% use public transportation, and 4.2% depend on other modes of transportation (USA Today, April 14, 1999). Assume that these percentages hold true for the 1995 population of all commuting workers. Recently 1000 randomly selected workers were asked what mode of transportation they use to commute to work. The following table lists the results of this survey (observed counts):

A report included data from a study in which 789 people in a representative sample of college students age 18 to 24 were asked how they perceive their money management skills. Possible responses were excellent, good, average, not very good, and poor. Each student in the sample was also classified by sex, resulting in the data in the table. Perception of Money Management Skills Not Very Good Excellent Good Average Poor Male 102 138 88 17 8 Female 81 193 136 22 4 Is there convincing evidence that there is an association between sex and how students perceive their money management skills? Test the relevant hypotheses using a significance level of a = 0.05. State the appropriate null and alternative hypotheses. O Ho: The proportions falling into each of the four perceptions of money management skills are the same for both sexes. H: The proportions falling into each of the four perceptions of money management skills are not the same for both sexes. O Ho: There is an association between sex…

Data from the Bureau of Labor Statistics indicates that in a certain​ month, 36.8​% of the labor force had a high school diploma or fewer years of​ education, 29.9​% had some college or an​ associate's degree, and 33.3​% had a​ bachelor's degree or more education. Of those with a high school diploma or fewer years of​ education, 6.8​%were unemployed. Of those with some college or an​ associate's degree, 4.7​% were​ unemployed, and of those with a​ bachelor's degree or more​ education, 2.9​%were unemployed. Find the probability that a randomly chosen labor force participant has some college or an associate's degree given that he or she is unemployed.

By a small margin, Facebook remains the top choice of social media over all ages, with 29% using Facebook most often among those using social media sites. However, more visually oriented social networks such as Snapchat and Instagram continue to draw in younger audiences. When asked "Which one social networking brand do you use most often?" the results in the table show the top brands chosen by Americans aged 12-34 who currently use any social networking site or service. Social M edia Site Faceboo k Snapchat Instagra m Twitter Percentage That Use Most Often 29 28 26 6 20 (a) What is the sum of the percentages for these top social media sites? Give your answer as an exact number. Macmillan Learning top social media sites: What percent of Americans aged 12-34 use other social media sites most often? Give your answer as an exact number. other social media sites: do %