Social Media Harris Interactive conducted a surveu in which they asked adult Americans (18 years or older) whether they used social media (Facebook, Twitter, and so on) regularly. The following table is based on the results of the survey.   18-34 35-44 45-54 55+ Total Use social media 117 89 83 49 338 Do not use social media 33 36 57 66 192 Total 150 125 140 115 530   a) If an adult American is randomly selected, what is the probability he or she uses social media? b) If an adult American is randomly selected, what is the probability he or she is 45 to 54 years of age? c) If an adult American is randomly selected, what is the probability he or she is a 35 to 44 year old social media user? d) If an adult American is randomly selected, what is the probability he or she is 35 to 44 years old or uses social media?

Q: ording to the Bureau of Labor Statistics (BLS), the median weekly earnings for men in the sales and…

A: Given data :  $627, $617, $732, $735, $639, $569, $494, $566, $648, $767, $683, $604, $727, $896,…

Q: In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1006 working adults…

A: Data is given for observed frequency : We have to calculate chi-square value :

Q: The researchers from a study interviewed two random samples, one in 2015 and one in 2018. Both…

A: Read a print book 2015 2018 total Yes 1195 1372 2567 No 726 605 1331 total 1921 1977

Q: In a survey conducted by a reputable marketing​ agency,257 of 1000 adults 19 years of age or older…

A: Sample: Sample is the subset of the subjects chosen from the whole population. In this study, ‘1000…

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a. The null and the alternative hypotheses are, H0: Health insurance coverage is independent of the…

Q: medical information​ online?" Of 1072 Internet users who chose to​ respond, 38% of them responded…

A: The term used to describe this type of survey is C. The respondents are a voluntary response…

Q: How many people took part in this survey? * The table shows data about what type of phones that…

A: To arrange the data of two categorical variables, two ways contingency table is used. The first row…

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a. In this case, it is needed to check whether health insurance coverage is independent of the size…

Q: Students in a class were asked how many movies they had seen in the last month. The results are…

A:

Q: A newspaper posted this question on its website: "How often do you seek medical information online?"…

A:

Q: You want to know what percentage of students own pets at your university. In asking 10 random…

A: In an observational study, researcher observes the individuals and measure the outcomes. In this…

Q: n 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 978 working adults…

A: The Chi-square test is popularly known as the test of goodness of fit. It describes the magnitude of…

Q: Conduct a test of independence to determine whether interest in leaving a current job for more money…

A:

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: The results of a survey of 150 students about the type of movie they prefer are shown in the two-way…

A: The objective of the question is to find out how many girls prefer Science Fiction movies according…

Q: The Condé Nast Traveler Gold List provides ratings for the top 20 small cruise ships. The data shown…

A: Given information: The data represents the values of the variables overall score, shore excursions…

Q: Exit Ticket: Video games: To determine if there is a relationship between age and playing video…

A: It is required to make a segmented bar chart showing the relationship between age and the status of…

Q: 9. At a state fair, one game involves guessing the number of candies in a plastic jar. The following…

A: The data arranged in the ascending order is given below : 1139 1147 1150 1156 1177…

Q: In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 1024 working adults…

A: There are two categorical variables which are leave job for money and generation. Leave job for…

Q: 448 students from UC Berkeley are surveyed about whether they are from Northern California, South…

A:

Q: February 12, 2009 marked the 200th anniversary of Charles Darwin's birth. To celebrate, Gallup, a…

A: Required probability is P(a college degree)

Q: health insurance benefits vary by the size of the company (Atlanta Business Chronicle, December 31,…

A: The chi-square test of independence is used to determine if there is a significant relationship…

Q: Health insurance benefits vary by the size of the company (the Henry J. Kaiser Family Foundation…

A: a:For the given data, the chi-square test for association is appropriate.Null Hypothesis:H0: The…

Q: The Excite Poll is an online poll at poll.excite.com. You click on an answer to become part of the…

A: Note- This is a multiple choice question, I have given the answer and explained it below.

Q: A television station wishes to study the relationship between viewership of its 11 p.m. news program…

A: p1 = 49/250 = 0.196 p4 = 81/250 = 0.336

Q: In a survey of 671 subjects, each was asked how often he or she watched TV. The survey subjects were…

A: Voluntary response sampling: In voluntary response sampling, the respondents select themselves into…

Q: In this type of questionnaire, the researcher records the responses but is not in the same location…

A: For this kind of questionnaire, the respondents receive it via mail from the researcher, who they…

Q: A circus operator randomly picked 5 day from the month of august to see how many people purchased…

A: Sample is the items randomly drawn from the population.

Q: a. What value should we expect for our sample proportion?

A: Let p be the population proportion of high school seniors who have a driver's license.Given that,

Q: benefits vary by the size of the company (the Henry J. Kaiser Family Foundation website, June 23,…

A: NOTE: As the significance level, i.e, α is not mentioned, I am taking it as 5%, i.e, 0.05. a). The…

Q: February 12, 2009 marked the 200th anniversary of Charles Darwin's birth. To celebrate, Gallup, a…

A:

Q: A researcher wants to estimate voting trends of women in Texas. Which characteristic is needed in…

A: Here researcher interested in voting trends of women in Texas.

Q: ks whether books are checked out by an adult or a child. She records this data for every fourth…

A: d) Given the librarian, check the books returned by the adults or a child are tracked. She records…

Q: Students in a statistics class at Penn State were asked, “About how many minutes do you typically…

A: 1) The assumptions necessary for performing the two-sample t-test, such that the results obtained…

Q: Consider the implications of selecting a sample based upon your choice as a researcher and how you…

A: If a sample is selected upon the choice of a researcher then it is expected to have a bias which…

Q: 524 students from UC Berkeley are surveyed about whether they are from Northern California, Southern…

A: The categorical variable is outcome. We have to find the expected values for each outcome. This is…

Q: The administrator in your college wants your opinion about the parking situation at the college. In…

A: The population in given case is All students entering the Madison hall.

Q: 5. For 2019, the mean fare to fly from Los Angeles to Miami was $250 on Aero Lindvallia. In December…

A:

Q: In a survey, 175 adults were asked whether they exercise and whether they are vegetarian. Their…

A: Given, Total number of adults = 175 Total number of vegetarians= 49+21= 70 Total number of adults do…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.