10.67 The Pew Research Center conducted a poll in January 2014 of online adults who use social networking sites. According to this poll, 89% of the 18-29 year olds and 82% of the 30-49 year olds who are online use social networking sites (www.pewinternet.org). Suppose that this survey included 562 online adults in the 18-29 age group and 624 in the 30-49 age group. and be the proportion of all online adults in the a. Let P2 P1 age groups 18-29 and 30-49, respectively, who use social networking sites. Construct a 95% confidence interval for P1 P2 b. Using a 1% significance level, can you conclude that pi is different from p2? Use both the critical-value and the p-value approaches

A recent health survey 500 single young men yielded the following information: 385 were a member of a sports club, 155 were vegetarian, and 30 declined to answer the survey’s questions. What percent of the men were both members of a sports club and vegetarian? Draw a Venn diagram to illustrate the result of the survey.

In a survey of 3367 adults aged 57 through 85​ years, it was found that 84.2​% of them used at least one prescription medication.    How many of the 3367 subjects used at least one prescription medication?

Determine whether the underlined number is a statistic or a parameter. in a study of all 4622 professors at a college, it is found that 40% own a television.

In a series of studies, Sebastian Deri and his colleagues (2017) asked multiple groups about the number of friend groups they had and how often they attended different social events. They then asked participants how they thought their own numbers compared to other people's: Did participants see themselves as less social, the same as, or more social than others? In the first study, the researchers reported that: "Three hundred four participants from Amazon's Mechanical Turk (150 women; Mage = 37.1; 78% White, 10% Black, and 6% Asian) completed a survey in exchange for modest payment" (p. 860). What do the researchers mean by "Amazon's Mechanical Turk" with respect to their sample of participants? O A. An archival data set that already exists and from which researchers can use data O B. An online tool that researchers can use to recruit people to participate in research in exchange for a small payment O C. An e-book sold by Amazon that includes contact information for possible…

In 1993 approximately 62.1 million Americans suffered injuries, as reported by the National Center for Health Statistics in Vital and Health Statistics. More males (33.4 million) were injured than females (28.7 million). Those statistics do not tell us whether males and females tend to be injured in similar circumstances. One set of categories commonly used for accident circumstances. One set of categories commonly used for accident circumstance is "while at work," "home", "motor vehicle", and "other". A random sample of accident reports gave the data in contingency table below. Male Female While at work 19 24 27 Home 14 Motor Vehicle 26 Other At the 5% significance level, do the data provide sufficient evidence to conclude that an association exists between accident circumstances and sex? Type in Canvas the grand total. 35