No explanation is required for this problem. Suppose that you had access to the following data set, called jobdata, with variable labels in the top row. This data set is a random sample of 15,280 members of the Service Employees International Union (SEIU). It records each person's gender, birth date, education level, job category, current salary, starting salary, and time employed. The first two rows are shown below. ID Gender bDate educ Jobcat salary salbegin jobtime prevexp minority 475 10-Feb- 1972 15 1 $102000 $55,000 80 36 f 20-Jul- 1965 m 0 476 16 2 $132000 $70,000 45 100 What sequence of commands (including pipe operators %>%) would you use to obtain a 95 percent confidence interval for the proportion of SEIU workers who are minorities? It's ok to have small typos e.g. a missing parenthesis or comma as long as you have all the inputs and functions you need, in the right order. 1

A government agency computed the proportion of U.S. residents who lived in each of four geographic regions in a particular year. Then a simple random sample was drawn of 1000 people living in the United States in the current year. The following table presents the results. Region Past YearProportion ObservedCounts Northeast 0.171 150 Midwest 0.245 235 South 0.357 398 West 0.227 217 Send data to Excel Can you conclude that the proportions of people living in the various regions changed between the current year and the past year? Use the 0.05 level of significance and the P-value method with the TI-84 Plus calculator.   What the P value?

in statistics, a collection of information is also called a ______ population sheet data set descriptive statistic sample statistic

How many samples or treatments are here?   490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01.                                                             Freshman  Sophmore   Junior    Senior Body Piercings                                          61              7              14          86 Only Tattoos                                             43              11             10         64 Only Mildly Piercings and Tattoos            20                9              7…

The General Social Survey is an annual survey given to a random selection of about 1500 adults in the United States. Among the many questions asked are "What is the highest level of education you've completed?" and "If you're employed full-time, how many hours do you spend working at your job during a typical week?" In a recent year, 1079 respondents answered both questions. The summary statistics are given in the chart below. (The sample data consist of the times, in hours per week, that were given by the respondents.) Sample Sample Sample size Groups mean variance Less than h.s. High school Bachelor's 258 40.9 101.8 263 41.8 97.5 270 42.2 94.4 Graduate 288 43.0 98.7 Send data to calculator Send data to Excel To decide if there are any differences in the mean hours per week worked by these different groups, we can perform a one-way, independent-samples ANOVA test. Such a test uses the following statistic. Variation between the samples F= Variation within the samples For the data from…

Moving to another question will save this response. Question 5 Obtain the five-number summary for the given data. The test scores of 15 students are listed below. 42 45 50 53 57 61 67 68 75 76 85 87 90 94 95 O 42, 53, 71.5, 87, 95 42, 52.25, 71.5, 85.5, 95 O 42, 53, 68, 87, 95 O 42, 52.25, 68, 85.5, 95 A Moving to another question will save this response. earch F2 DII F3 F4 F5 PrtS 5 W

For a set of data arranged or sorted in numerical order, the value of the observation in the center is called the weighted mean. Group startsTrue or FalseTrue, unselectedFalse, unselectedGroup ends