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AP Stats Midterm Exam Questions with Answers A certain type of remote-control car has a fully charged battery at the time of purchase. The distribution of running times of cars of this type, before they require recharging of the battery for the first time after its period of initial use, is approximately normal with a mean of 80 minutes and a standard deviation of 2.5 minutes. The shaded area in the figure below represents which of the following probabilities? - Answer-A. The probability that t...

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AP Stats Midterm Exam With Latest & Verified Answers 2024. Which of the following questions about cars in a school parking lot will allow for the collection of a set of categorical data? - CORRECT ANSWER E. What are the colors of the cars in the lot? The following table summarizes the number of pies sold at a booth one day at a local farmers market. Which of the following statements is supported by the table? - CORRECT ANSWER E. The combined percentage of key lime pies sold and pumpkin ...

A particularly common question in the study of wildlife behavior involves observing contests between "residents" of a particular area and "intruders." In each contest, the "residents" either win or lose the encounter (assuming there are no ties). Observers might record several variables. Which of the following variables is categorical? Ans: whether the "residents" win or lose (C) mrs. austin measures the age, marital status and earned income of an SRS of 1463 women. the number ...

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The goal of a nutritional study was to compare the caloric intake of adolescents living in rural areas of the United States with the caloric intake of adolescents living in urban areas of the United States. A random sample of ninth-grade students from one high school in a rural area was selected. Another random sample of ninth graders from one high school in an urban area was also selected. Each student in each sample kept records of all the food he or she consumed in one day. The back-to-back s...

D - correct answer A forester studying oak trees finds that the correlation between x= the age (measured in years) and y= height (in feet) of a sample of trees is 0.78. Which of the following statements must be true? a) 78% of the variability in tree heights can be explained by variation on the trees' ages. b) for every year a tree ages, its height increases on average by 78%. c) if we let x= height of trees and y= age of trees, then the correlation w...