Applications | RapidIdentity x D Quizzes 2 * *Dashboard X + X - > C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2FIti%2Flaunch%3Fmodule_session%... [ * @ G Return Submit 18. Distinguish between the distribution of a random variable and the sampling distributions of its associated sample statistics. 19. Identify the sampling distributions of the sample mean and the sample proportion and use them to make statistical inferences. 39. Calculate descriptive and inferential statistics using an appropriate statistical software package. Instructions This test contains both multiple choice and fill-in-the-blank questions. For multiple choice questions, select the best answer. For others, follow the rounding instructions exactly to receive full credit. Some problems require the use of StatCrunch. All data sets are found in the StatCrunch Assignments group. The average student will require approximately three hours per attempt to complete this test. You are allowed a maximum of two attempts. 898 Questions? 1 Unlike with homework assignments and practice exams, I only provide limited help--no "hints" or helpful suggestions, because this is a test to see how well you've mastered 2 the material. However, I am more than willing to answer general questions about the techniques used in the questions; please send those to me via a direct Canvas message. 1 0.5 points A study of elementary school academic performance classifies the students in the sample by their grade level: K, 1, 2, 3, 4, 5. Which of the four levels of measurement (nominal, 4 ordinal, interval, ratio) is most appropriate for this data? 5 O The ordinal level of measurement is most appropriate because the data can be ordered, but differences (obtained by subtraction) cannot be found or are meaningless. The interval level of measurement is most appropriate because the data can be ordered, differences can be found and are meaningful, and there is no natural starting zero 6 point. O The ratio level of measurement is most appropriate because the data can be ordered, differences (obtained by subtraction) can be found and are meaningful, and there is a 7 natural starting point. 8 The nominal level of measurement is most appropriate because the data cannot be ordered. 9 2 0.5 points 10 To see if there is a link between liver cancer and a hepatitis C infections, researchers examine the medical records of patients with liver cancer determine if they have a history of hepatitis C. This is a(n): 11 O Cross-sectional study 12 Experiment Retrospective study 13 Longitudinal study 14 15 3 0.5 points - To determine customer opinion of their check-in service, a major airline randomly selects 150 flights during a certain week, and then surveys every passenger on each of the 150 Type here to search 62OF Sunny 11:19 AM 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Dashboard X + X C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2Flti%2Flaunch%3Fmodule_session%... [ * [ @ G Return Submit Experiment O Retrospective study O Longitudinal study 3 0.5 points To determine customer opinion of their check-in service, a major airline randomly selects 150 flights during a certain week, and then surveys every passenger on each of the 150 flights. What type of sampling is this? 1 O Cluster Stratified 2 OO Convenience Simple random OO 4 Systematic 5 4 5 points 6 The following incomplete frequency table shows blood types of a sample of 40 patients. Use the information given to fill in the remainder of the table. (Enter frequencies as integers. Enter relative frequencies as percentages rounded to the nearest whole number; do not include a % symbol.) Blood Type Frequency Distribution 8 Type Frequency Relative Frequency (%) O OFreq] ORelFr]% 10 A [AFreq 35% B BFreq] 15% 11 AB 2 [ABRelFr]% 12 Total 40 100% 13 [OFreq] = type your answer. [AFreq] = type your answer.. [BFreq] = type your answer.. [ORelFr] = type your answer. 14 [ABRelFR] = type your answer... 15 - 11:19 AM Type here to search 17 62'F Sunny 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Dashboard X + X - > C A learn.vocs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2FIti%2Flaunch%3Fmodule_session%... [ * @ G Return Submit 5 3 points Exam Data Set 1 contains 25 home voltage measurements. Suppose a grouped frequency distribution is built from this data set using a lowest lower bound of 125.8 volts and a class width of 0.2 volts. Enter the correct missing cell values in the fields below. (Input the frequency count as an integer. Input the upper bounds as decimals rounded to one decimal place, adding a trailing zero as necessary). 898 1 Voltage Grouped Frequency Distribution E 35 Lower Upper Bound Bound Frequency 2 125.8 [a] 126.0 126.1 126.2 126.3 4 126.4 126.5 [b] 126.6 [c] 2 5 6 [a] = type your answer.. type your answer. [c] = type your answer.. 8 6 2 points Exam Data Set 2 contains pulse rates in beats per minute (bom) for 30 people taking part in a wellness study. Calculate the mean, median, mode, range, variance, and standard deviation of the sample. (Round all calculations except the mode to one decimal place; add a trailing zero as needed. Do not round the mode.) 10 The mean is type your answer.. bpm. The median is type your answer.. bpm. The mode is type your answer. bpm. The range is 11 type your answer... bpm. The variance is type your answer. bom squared. The standard deviation is type your answer. bpm. 12 13 14 7 1 point Workers at a health care facility measure the blood pressure (in mm Hg) of every patient who visits. The graph below is a relative frequency histogram for the systolic blood pressure 15 readings of every patient aged between 25 and 40 years who visited during 2017. The readings were recorded to the nearest whole number. Approximately what proportion of - these patients had a systolic blood pressure reading of between 110 and 139 mm Hg inclusive? (Enter your answer as a decimal rounded to two decimal places. Do not enter a percentage. ) Type here to search 17 11:20 AM 62"F Sunny 10/11/2022 19Applications | RapidIdentity x _ Quizzes 2 * *Dashboard X + X C A learn.vccs.edu/courses/500264/external_tools/retrieve?display=full_width&url=https%3A%2F%2Fvccs.quiz-Iti-iad-prod.instructure.com%2Flti%2Flaunch%3Fmodule_session%... [ * [ @ G Return Submit The mean is type your answer.. bpm. The median is type your answer.. bpm. The mode is type your answer.. bpm. The range is type your answer.. bpm. The variance is type your answer.. bpm squared. The standard deviation is type your answer. bpm. 7 1 point Workers at a health care facility measure the blood pressure (in mm Hg) of every patient who visits. The graph below is a relative frequency histogram for the systolic blood pressure readings of every patient aged between 25 and 40 years who visited during 2017. The readings were recorded to the nearest whole number. Approximately what proportion of 1 these patients had a systolic blood pressure reading of between 110 and 139 mm Hg inclusive? (Enter your answer as a decimal rounded to two decimal places. Do not enter a percentage.) 2 Relative Frequency 4 0.35 0.30 - 5 0.25 - 6 0.20 - 0.15 7 0.10 - 8 0.05 - 0.00 9 100 110 120 130 140 150 160 Systolic Blood Pressure (mm Hg) 10 11 The proportion of patients with a systolic blood pressure reading of between 110 and 139 mm Hg inclusive is |type your answer. 12 13 8 3 points 14 Exam Data Set 3 contains magnitudes (on the Richter Scale) of a random sample of 50 recent observed earthquakes. Find the mean and standard deviation of this sample, then use those sample statistics and the Empirical Rule to determine the upper and lower bounds on significance. (Round your calculations to three decimal places; add 15 trailing zeros as needed. Note: if your calculations result in a negative number, enter 0.000.) - The mean Richter Scale rearling is | tune vour answer The standard deviation of the Richter Scale readings is | tune vour answer Type here to search 217 Market +0.57% ~ 9 0 4x 11:20 AM 10/11/2022 19