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- The number of AIDS cases reported for Santa Clara County, California is broken down by race in the table below. Source: "HIV/AIDS Epidemiology Santa Clara County", Santa Clara County Public Health Department, May 2011. Race Cases White 2290 Hispanic 1109 Black 478 Asian/Pacific Islander 235 Total 4112 Directions: Conduct a chi-square test for goodness-of-fit to determine whether or not the occurrence of AIDS cases is consistent with the race distribution of Santa Clara County. 1. Choose the correct null and alternative hypotheses. O Ho: The distribution of AIDS cases is consistent with the race distribution in County. H.: The distribution of AIDS cases is different from the race distribution in Santa Clara County. Clara O Ho: The distribution of AIDS cases is different from the race distribution in Santa Clara County. Ha: The distribution of AIDS cases is consistent with the race distribution in Santa Clara County. 2. Compute the test statistic. The population distribution of Santa…The human resource department at a certain company wants to conduct a survey regarding worker benefits. The department has an alphabetical list of all 3207employees at the company and wants to conduct a systematic sample of size 40. Question content area bottom Part 1 (a) What is k?Consider the set of 10 measurements represented by the following stem-and-leaf diagram. What is the sample mean? stem 7 68819 leaf 6 7889 0677 10 0 Key: 68 means 68 ○元=89.5 O 90.33 89.0 O-90.1 0-90.0
- The symbol u represents the mean of all possible sample proportions from samples of size n. OFalse True Hìnt: Help Submit Question 28 MacBook Air OrQuestion Help v An advocacy organization surveys 967 citizens of country A and 182 of them reported being born in another country. Similarly, 174 out of 1241 citizens of country B reported being foreign-born. The researchers want to test if the proportions of foreign born are the same in country B as in country A. Complete parts a through c below. a) What is the difference in the sample proportions, p1 -p2, of foreign born residents from both countries? Assume p1 is the proportion of foreign born residents from country A and p2 is the proportion of foreign born residents from country B. The difference in the sample proportions, p1- P2, is (Round to three decimal places as needed.)Please use Tukey's test
- NoneConsider the following: at Bernhardt College, 200 (of the 3,000) students were polled and asked how often they eat off campus each week. The study found that 76% of students eat off campus at least twice a week. Identify the population, population parameter, sample, and sample statistics.Match the name of the sampling method descriptions given. Situations surveying every 3rd driver coming through a tollbooth divide the population by age and select 5 people from each age pulling 50 names from a hat dividing by population by voting precinct, and sampling everyone in the precints selected asking people on the street Sampling Method a. Simple Random b. Stratified c. Systematic d. Cluster e. Convenience
