MATH 120: Introduction to Statistics latest Week 8 Final Exam. MAY QTR with 100% Accurate Answers. GRADED+

MATH 120: Introduction to Statistics ht ht ht ht



Lime Spring Week 8 Final Exam
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1. 10 students take an exam and earn the following scores: 86, 96, 90, 92, 79, 94, 86, 74, 82, and
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91 What is the mean of the scores?
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A: 87. ht




2. 10 students take an exam and earn the following scores: 86, 96, 90, 92, 79, 94, 86, 74, 82, and
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91 What is the median of the scores?
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A: 88. ht




3. 10 students take an exam and earn the following scores: 86, 96, 90, 92, 79, 94, 86, 74, 82, and
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91 What is the mode of the scores?
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A: 86. ht




4. While conducting market research, an automobile manufacturer looks at the number of
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SUVs and sedans produced in the prior year. What type of data is this?
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A: Quantitative data.
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5. While conducting market research, an automobile manufacturer asks consumers about
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their preferences between SUVs and sedans. What type of data is this?
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A: Qualitative data.
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6. A political think tank wants to conduct a poll of likely voters in a state. If the think tank
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breaks the state into 20 groups with common characteristics and then randomly samples
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each group, what type of sampling is this?
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A: Stratified sampling.
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7. A research team at a medical device manufacturer wants FDA approval for the
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manufacturer's latest product. The team sets up a study where half of the participants in
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the study use the device and half of the participants in the study do not. When the study
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is over, the research team compares the results of the two groups. Which type of study is
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this?
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A: Experimental study.
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8. If 10,000 students take a standardized test, which type of graph would be most helpful
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for understanding the data?
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A: A histogram..
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, 9. If the graph is displaying the estimated value of homes in an area, approximately what is
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the average home value?
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A: $375K. ht




10. Which answer explains why the average home value is above the median home value?
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A: A few outlier home values are skewing the average high.
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11. If there is a 30% chance of rain each of the next two days, what is the probability of rain
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both days? (Assume rain is an independent event.)
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A: 9% ht




12. If there is a 60% chance of rain each of the next two days, what is the probability that it does
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not rain on either day? (Assume rain is an independent event.)
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A: 16% ht




13. Roulette is a game of chance using a wheel with 38 colored pockets and a ball that randomly
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lands in one of the colored pockets. In the American version of roulette, there are 18 red
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pockets, 18 black pockets, and 2 green pockets. What is the probability that a gambler betting
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on green will win?
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A: 16 ht