Grade 12 Quizzes, Questions & Answers
Recent Grade 12 Quizzes
Questions: 9 | Attempts: 909 | Last updated: Mar 22, 2025
Questions: 10 | Attempts: 5317 | Last updated: Mar 21, 2025
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Sample QuestionWhich of these does not apply the principles of inorganic chemistry?
Questions: 10 | Attempts: 624 | Last updated: Mar 21, 2025
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Sample QuestionAngela's test scores in math class are 100, 95, 100, 93, and 70. What is her average in math class?
Questions: 53 | Attempts: 716 | Last updated: Mar 21, 2025
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Sample QuestionBreathing, typically is an __________process.
Questions: 5 | Attempts: 723 | Last updated: Mar 20, 2025
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Sample QuestionMoving times (in minutes) and weights (in pounds) were recorded for a random sample of 20 moving jobs requiring three-man crews, and the results of the regression analysis are shown below. The equation for the least-squares regression line is:
Questions: 5 | Attempts: 707 | Last updated: Mar 22, 2025
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Sample QuestionThe following boxplots summarize two data sets, X and Y. Which of the following must be true?
Questions: 5 | Attempts: 523 | Last updated: Mar 20, 2025
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Sample QuestionA university is proposing a new procedure for professors to gain tenure. To gauge sentiment about the proposal, the university intends to randomly sample five professors, five assistant professors, and five associate professors. This is an example of what type of sampling design?
Questions: 5 | Attempts: 544 | Last updated: Mar 20, 2025
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Sample QuestionTwo friends, Tom and Janice, have cars in desperate need of repair. On any given day, the probability that Tom's car will break down is 0.5, the probability that Janice's car will break down is 0.5, and the probability that both cars will break down is 0.3. What is the probability that Tom and Janice's car will break down?
Questions: 10 | Attempts: 611 | Last updated: Mar 11, 2025
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Sample QuestionData were collected on two variables X and Y and a least-squares regression line was fitted to the data. The estimated equation for this data is y = -2.29 + 1.70x. One point has x = 5 and y = 6. What is the residual for this point?
Questions: 5 | Attempts: 653 | Last updated: Mar 21, 2025
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Sample QuestionA medicine is known to produce side effects in one in five patients taking it. Suppose a doctor prescribes the medicine to four unrelated patients. What is the probability that none of the patients will develop side effects?
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