Question 1 3 pts Which of the following describes a scenario in which a chi-square goodness of t test would be an appropriate procedure to justify the claim? 0 A travel agent would like to estimate the average price of a trip to Las Vegas in January from Washington DC. including airfare. The agent selects a random sample of trip prices throughout the month of January. 0 A researcher would like to show that the distribution of vegetation at Manassas National Battleeld Park is different from Harpers Ferry National Historical Park. Independent plots within both parks are collected. Researchers record the number of individual trees and shrubs within each plot. 0 A university professor would like to investigate whether students who take an introductory biology course plan to major in medicine. The professor selects a random sample of students from the introductory biology course and records the number of students who intend to major in medicine. 0 A museum director would like to show that the distribution of age of individuals who visit the museum is different from what the federal government funding formula uses for the museum. The director has a random sample of visitors and records the age of each individual based on several categories; under 18, between 19-25, 26-50, over 50. Question 2 3 pts A group of students wanted to see which type of microwave popcorn is best. To test this, students selected three types of microwave popcorn. Using the same microwave and following the directions on each bag, students counted the number of kernels popped, the number of kernels unpopped, and the number of "old maids" (kernels partially popped) for 3 bags of popcorn of each type. The results are shown below. Popped Unpopped Old Maid What inference procedure will the students use to determine whether or not the distribution of kernel outcome is the same for all three brands? O 2 proportion 2 Test 0 Chi-Square test for Independence O Chi-Square test for Homogeneity O Chi-Square Goodness of Fit Test Question 3 3 pts Data was collected from a simple random sample of 200 patients from assisted living facilities across the US. Each individual was categorized by education level and by whether he or she uses a smartphone. The table shown summarizes the data. , Does Not Use 3 Education Level Uses a Smartphone Smartphone High School Some College College Graduate Which inference procedure should be used to determine whether there is an association between education level and smartphone usage for adults living in assisted living facilities? 0 Chi-Square test for Homogeneity O 2 proportion z-test O Chi-Square Goodness of Fit Test 0 Chi-Square test for Independence Question 4 3 pts A national magazine showed the following distribution of favorite leisure activities for young adults (18-24). , _ Beach/Water , _ Snow Skiing _ . _ , ActIVIty , , , Hiking . Camping FIshIng/Huntmg ActIVItIes or Boarding Nora, a 24-year-old computer engineer who works at a large technology company in Seattle with more than 1000 workers between the ages of 18-24, wants to see whether the distribution at her company matches that of the publication. On a Monday morning, Nora stands near the check-in desk at her company and asks the rst 50 workers between 18-24 years old what their favorite leisure activity is. Nora records the following table of observed values. , _ Beach/Water Snow Skiing , , . , ActIVIty _ _ , _ Camping Fishing/Hunting AC'l'lVI'l'les or Boarding Nora decides to conduct a chisquare goodness of t test to see whether the distribution of workers at her company differs signicantly from that of the magazine. Nora's co-worker tells her that her information does not meet the conditions necessary for a Goodness of t test. Which condition has not been met? I. Data are collected using a random sample or randomized experiment II. n g 10%N Hi. All expected values are greater than 5 O I and Ill only O Ill only O I only O I and Il onlyQuestion 5 3 pts Nurses work some of the most demanding schedules known which increases their risk of sleep deprivation and sleep disorders. The director at a major hospital with over 150 nurses is interested in whether nurses who work the night shift are more at risk for sleep deprivation and sleep disorders. A simple random sample of 50 nurses is surveyed. Nurses are asked whether they work mostly night shift, mostly day shift, or both shifts on alternating weeks. Each nurse participates in a sleep disorder study to determine whether they suffer from sleep deprivation and/or sleep disorders. The data is shown in the table below with expected values below the observed values. Sleep No Sleep Disorder Disorder All MostlyDay 6 12 18 7.560 10.440 MostlyNight 9 12 21 8.820 12.180 Alternating 6 5 11 4.620 6.380 All 21 29 50 Cell Contents Count Expectedcount Which of the following conditions has NOT been met for the chi-square test for Independence? Select all that apply. C] The sample size is less than 10% of the population size C] All expected counts are at least 5 C] The data come from a simple random sample Question 6 3 pts The Virginia 200 in Norfolk VA keeps track of the percentage of individuals with season passes according to their home neighborhood in Norfolk. A federal grant investigator would like to show that this distribution of neighborhoods for individuals buying season passes is different from what the zoo claims. The investigator randomly sampled 150 individuals entering the zoo with a season pass and recorded the home neighborhood of each individual. Home Neighborhood Broad Creek Outside Norfolk The investigator will use the data to test the 200's claim which is reected in the following null hypothesis: H0: ch=0.2o, pG=O.36, pN=0.18, pOV=0.22, pON=O.04 The test statistic was calculated. Which category contributes most to the chi-square test statistic? O Broad Creek; there were more than expected 0 Ocean View; there were less than expected 0 Outside Norfolk; there were more than expected. 0 Ghent; there were less than expected